Castro Valley, CA Facts, Population, Income, Demographics, Economy

Median Age: 40.4 years

Ancestries: Ancestries: English (3.6%), German (3.4%), Italian (2.9%), Irish (2.8%), European (2.8%), Portuguese (2.6%).

Elevation: 180 feet

Population Density:

Zip Codes: 94546, 94552, 94577

Goldribbon

Recognitions and Certifications

Accredited Drug Testing has been recognized as one of the "Top 10 drug testing companies" for excellent customer service and we have received TPA Accreditation from the National Drug and Alcohol Screening Association. We are active in all drug testing industry associations and our staff are trained and certified as drug and alcohol testing specialists.

Important Links

National Drug and Alcohol Screening Association (https://ndasa.com/)

National Drug Free Workplace Alliance (https://www.ndwa.org/)

Substance Abuse Program Administrators Association (https://www.sapaa.com/)

Substance Abuse Mental Health Safety Administration (https://www.samhsa.gov/)

US Drug Enforcement Administration (https://www.dea.gov/)

Office of Drug alcohol Policy Control (https://www.transportation.gov/odapc)

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Drug & Alcohol Testing Centers, Castro Valley, CA

Accredited Drug Testing Inc, is the nation's leading provider of drug, alcohol, occupational health, and DNA testing and has testing centers in Castro Valley, CA and throughout the local area. Testing centers are within minutes of your home or office and same day service is available in most cases.

20400 Lake Chabot Rd Ste 101, 0.2 miles

20400 Lake Chabot Rd Ste 101,
Castro Valley, CA 94546
Categories: Castro Valley CA

24326 MISSION BLVD STE 3 2.1 miles

24326 MISSION BLVD STE 3
HAYWARD, CA 94544
Categories: HAYWARD CA

13939 E 14TH ST 3.3 miles

13939 E 14TH ST
SAN LEANDRO, CA 94578
Categories: SAN LEANDRO CA

27200 CALAROGA AVE 4.2 miles

27200 CALAROGA AVE
HAYWARD, CA 94545
Categories: HAYWARD CA

26250 INDUSTRIAL BLVD STE 32 4.4 miles

26250 INDUSTRIAL BLVD STE 32
HAYWARD, CA 94545
Categories: HAYWARD CA

2587 MERCED ST 4.5 miles

2587 MERCED ST
SAN LEANDRO, CA 94577
Categories: SAN LEANDRO CA

29000 HESPERIAN BLVD 5.4 miles

29000 HESPERIAN BLVD
HAYWARD, CA 94545
Categories: HAYWARD CA

1555 DOOLITTLE DR STE 180 5.5 miles

1555 DOOLITTLE DR STE 180
SAN LEANDRO, CA 94577
Categories: SAN LEANDRO CA

3555 WHIPPLE RD 6.1 miles

3555 WHIPPLE RD
UNION CITY, CA 94587
Categories: UNION CITY CA

7901 OAKPORT ST STE 4950 2ND FLOOR 7.0 miles

7901 OAKPORT ST STE 4950 2ND FLOOR
OAKLAND, CA 94621
Categories: OAKLAND CA

7817 OAKPORT ST 7.1 miles

7817 OAKPORT ST
OAKLAND, CA 94621
Categories: OAKLAND CA

401 ROLAND WAY STE 205 7.3 miles

401 ROLAND WAY STE 205
OAKLAND, CA 94621
Categories: OAKLAND CA

33077 ALVARADO NILES RD 7.4 miles

33077 ALVARADO NILES RD
UNION CITY, CA 94587
Categories: UNION CITY CA

33560 ALVARADO NILES RD 7.6 miles

33560 ALVARADO NILES RD
UNION CITY, CA 94587
Categories: UNION CITY CA

7667 AMADOR VALLEY BLVD 8.4 miles

7667 AMADOR VALLEY BLVD
DUBLIN, CA 94568
Categories: DUBLIN CA

5720 Stoneridge Mall Road, Suite 110 8.5 miles

5720 Stoneridge Mall Road, Suite 110
Pleasanton, CA 94588
Categories: Pleasanton CA

2301 CAMINO RAMON STE 108 8.7 miles

2301 CAMINO RAMON STE 108
SAN RAMON, CA 94583
Categories: SAN RAMON CA

7601 STONERIDGE DR FL 1 8.8 miles

7601 STONERIDGE DR FL 1
PLEASANTON, CA 94588
Categories: PLEASANTON CA

6001 NORRIS CANYON RD Ste 142 8.9 miles

6001 NORRIS CANYON RD Ste 142
SAN RAMON, CA 94583
Categories: SAN RAMON CA

5601 NORRIS CANYON RD STE 140 8.9 miles

5601 NORRIS CANYON RD STE 140
SAN RAMON, CA 94583
Categories: SAN RAMON CA

2421 ENCINAL AVE STE A 9.8 miles

2421 ENCINAL AVE STE A
ALAMEDA, CA 94501
Categories: ALAMEDA CA

4847 HOPYARD RD STE 4-424 10.0 miles

4847 HOPYARD RD STE 4-424
PLEASANTON, CA 94588
Categories: PLEASANTON CA

2111 Whitehall Place, Suite D 10.2 miles

2111 Whitehall Place, Suite D
Alameda, CA 94501
Categories: Alameda CA

35500 DUMBARTON CT 10.3 miles

35500 DUMBARTON CT
NEWARK, CA 94560
Categories: NEWARK CA

5635 W LAS POSITAS BLVD 10.7 miles

5635 W LAS POSITAS BLVD
PLEASANTON, CA 94588
Categories: PLEASANTON CA

556 Mowry Avenue, Suite 103 10.8 miles

556 Mowry Avenue, Suite 103
Fremont, CA 94536
Categories: Fremont CA

2000 MOWRY AVE 11.0 miles

2000 MOWRY AVE
FREMONT, CA 94538
Categories: FREMONT CA

2147 MOWRY AVE STE C1 11.0 miles

2147 MOWRY AVE STE C1
FREMONT, CA 94538
Categories: FREMONT CA

3128 SANTA RITA RD 11.4 miles

3128 SANTA RITA RD
PLEASANTON, CA 94566
Categories: PLEASANTON CA

3161 WALNUT AVE 11.5 miles

3161 WALNUT AVE
FREMONT, CA 94538
Categories: FREMONT CA

2324 SANTA RITA RD STE 4 11.5 miles

2324 SANTA RITA RD STE 4
PLEASANTON, CA 94566
Categories: PLEASANTON CA

2224 DELUCCHI DR 11.7 miles

2224 DELUCCHI DR
PLEASANTON, CA 94588
Categories: PLEASANTON CA

4000 DUBLIN BLVD STE 150 11.9 miles

4000 DUBLIN BLVD STE 150
DUBLIN, CA 94568
Categories: DUBLIN CA

39180 FARWELL DR STE 231 12.2 miles

39180 FARWELL DR STE 231
FREMONT, CA 94538
Categories: FREMONT CA

3200 BUSCH RD 12.3 miles

3200 BUSCH RD
PLEASANTON, CA 94566
Categories: PLEASANTON CA

1517 GRAND AVE 12.4 miles

1517 GRAND AVE
PIEDMONT, CA 94611
Categories: PIEDMONT CA

384 EMBARCADERO W 12.4 miles

384 EMBARCADERO W
OAKLAND, CA 94607
Categories: OAKLAND CA

1700 BROADWAY STE 310 12.7 miles

1700 BROADWAY STE 310
OAKLAND, CA 94612
Categories: OAKLAND CA

4069 PIEDMONT AVE STE 910 12.9 miles

4069 PIEDMONT AVE STE 910
OAKLAND, CA 94611
Categories: OAKLAND CA

3300 WEBSTER ST, STE 1110 13.0 miles

3300 WEBSTER ST, STE 1110
OAKLAND, CA 94609
Categories: OAKLAND CA

350 HAWTHORNE AVE 13.0 miles

350 HAWTHORNE AVE
OAKLAND, CA 94609
Categories: OAKLAND CA

5763 STEVENSON BLVD 13.0 miles

5763 STEVENSON BLVD
NEWARK, CA 94560
Categories: NEWARK CA

3701 BROADWAY FL 5 13.0 miles

3701 BROADWAY FL 5
OAKLAND, CA 94611
Categories: OAKLAND CA

1098 FOSTER CITY BLVD, STE 102 13.5 miles

1098 FOSTER CITY BLVD, STE 102
FOSTER CITY, CA 94404
Categories: FOSTER CITY CA

42650 CHRISTY ST 13.8 miles

42650 CHRISTY ST
FREMONT, CA 94538
Categories: FREMONT CA

1425 S MAIN ST 13.8 miles

1425 S MAIN ST
WALNUT CREEK, CA 94596
Categories: WALNUT CREEK CA

3225 SELDON CT 14.3 miles

3225 SELDON CT
FREMONT, CA 94539
Categories: FREMONT CA

2450 ASHBY AVE 14.6 miles

2450 ASHBY AVE
BERKELEY, CA 94705
Categories: BERKELEY CA

2 TERMINAL 14.7 miles

2 TERMINAL
SAN FRANCISCO, CA 94128
Categories: SAN FRANCISCO CA

1981 N BROADWAY Ste 190 14.7 miles

1981 N BROADWAY Ste 190
WALNUT CREEK, CA 94596
Categories: WALNUT CREEK CA

60 N EL CAMINO REAL 15.0 miles

60 N EL CAMINO REAL
SAN MATEO, CA 94401
Categories: SAN MATEO CA

39400 Padeo Padre Pkwy Mission Bldg 15.1 miles

39400 Padeo Padre Pkwy Mission Bldg
Fremont, CA 94538
Categories: Fremont CA

6001 SHELLMOUND ST STE 850 15.1 miles

6001 SHELLMOUND ST STE 850
EMERYVILLE, CA 94608
Categories: EMERYVILLE CA

108 LA CASA VIA, STE 105 15.2 miles

108 LA CASA VIA, STE 105
WALNUT CREEK, CA 94598
Categories: WALNUT CREEK CA

125 SHOREWAY RD STE A 15.4 miles

125 SHOREWAY RD STE A
SAN CARLOS, CA 94070
Categories: SAN CARLOS CA

2850 7TH ST STE 100 15.8 miles

2850 7TH ST STE 100
BERKELEY, CA 94710
Categories: BERKELEY CA

1400 VETERANS BLVD FL 1 15.9 miles

1400 VETERANS BLVD FL 1
REDWOOD CITY, CA 94063
Categories: REDWOOD CITY CA

SFIA Terminal 2 16.2 miles

SFIA Terminal 2
San Francisco, CA 94125
Categories: San Francisco CA

222 W 39TH AVE 16.2 miles

222 W 39TH AVE
SAN MATEO, CA 94403
Categories: SAN MATEO CA

1100 Laurel Street, Suite F 16.3 miles

1100 Laurel Street, Suite F
San Carlos, CA 94070
Categories: San Carlos CA

On-site only 16.4 miles

On-site only
San Francisco, CA 94124
Categories: San Francisco CA

46305 WARM SPRINGS BLVD 16.4 miles

46305 WARM SPRINGS BLVD
FREMONT, CA 94539
Categories: FREMONT CA

320 LENNON LN FL 2 16.5 miles

320 LENNON LN FL 2
WALNUT CREEK, CA 94598
Categories: WALNUT CREEK CA

46690 MOHAVE DR 16.5 miles

46690 MOHAVE DR
FREMONT, CA 94539
Categories: FREMONT CA

46752 MISSION BLVD STE A 16.5 miles

46752 MISSION BLVD STE A
FREMONT, CA 94539
Categories: FREMONT CA

1111 E STANLEY BLVD 16.7 miles

1111 E STANLEY BLVD
LIVERMORE, CA 94550
Categories: LIVERMORE CA

1133 E STANLEY BLVD Ste 151 16.7 miles

1133 E STANLEY BLVD Ste 151
LIVERMORE, CA 94550
Categories: LIVERMORE CA

2505 BATAAN ST STE O 17.0 miles

2505 BATAAN ST STE O
OAKLAND, CA 94607
Categories: OAKLAND CA

170 ALAMEDA DE LAS PULGAS 17.3 miles

170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Categories: REDWOOD CITY CA

1663 ROLLINS RD 17.4 miles

1663 ROLLINS RD
BURLINGAME, CA 94010
Categories: BURLINGAME CA

1860 EL CAMINO REAL STE 400 17.5 miles

1860 EL CAMINO REAL STE 400
BURLINGAME, CA 94010
Categories: BURLINGAME CA

609 GREGORY LN STE 100 17.6 miles

609 GREGORY LN STE 100
PLEASANT HILL, CA 94523
Categories: PLEASANT HILL CA

24 WILLIE MAYS PLZ 17.6 miles

24 WILLIE MAYS PLZ
SAN FRANCISCO, CA 94107
Categories: SAN FRANCISCO CA

401 Gregory Ln, Ste 146 17.6 miles

401 Gregory Ln, Ste 146
Pleasant Hill, CA 94523
Categories: Pleasant Hill CA

1501 TROUSDALE DR 17.6 miles

1501 TROUSDALE DR
BURLINGAME, CA 94010
Categories: BURLINGAME CA

2 CONNECTICUT ST STE 1 17.7 miles

2 CONNECTICUT ST STE 1
SAN FRANCISCO, CA 94107
Categories: SAN FRANCISCO CA

3 S LINDEN AVE 18.0 miles

3 S LINDEN AVE
SOUTH SAN FRANCISCO, CA 94080
Categories: SOUTH SAN FRANCISCO CA

795 EL CAMINO REAL 18.0 miles

795 EL CAMINO REAL
PALO ALTO, CA 94301
Categories: PALO ALTO CA

3000 LAS POSITAS RD 18.1 miles

3000 LAS POSITAS RD
LIVERMORE, CA 94551
Categories: LIVERMORE CA

49 DRUMM ST 18.3 miles

49 DRUMM ST
SAN FRANCISCO, CA 94111
Categories: SAN FRANCISCO CA

26 CALIFORNIA ST 18.3 miles

26 CALIFORNIA ST
SAN FRANCISCO, CA 94111
Categories: SAN FRANCISCO CA

580 MARKET ST STE 100 18.4 miles

580 MARKET ST STE 100
SAN FRANCISCO, CA 94104
Categories: SAN FRANCISCO CA

300 PASTEUR DR 18.7 miles

300 PASTEUR DR
PALO ALTO, CA 94304
Categories: PALO ALTO CA

3555 CESAR CHAVEZ 18.7 miles

3555 CESAR CHAVEZ
SAN FRANCISCO, CA 94110
Categories: SAN FRANCISCO CA

801 TRAEGER AVE Ste 212 18.9 miles

801 TRAEGER AVE Ste 212
SAN BRUNO, CA 94066
Categories: SAN BRUNO CA

845 JACKSON ST 19.0 miles

845 JACKSON ST
SAN FRANCISCO, CA 94133
Categories: SAN FRANCISCO CA

International Terminal Level 3 A Side 19.1 miles

International Terminal Level 3 A Side
SAN FRANCISCO, CA 94128
Categories: SAN FRANCISCO CA

Castro & Duboce St, South Tower Ste 160A 19.2 miles

Castro & Duboce St, South Tower Ste 160A
SAN FRANCISCO, CA 94114
Categories: SAN FRANCISCO CA

601 VAN NESS AVE Ste 2008 19.2 miles

601 VAN NESS AVE Ste 2008
SAN FRANCISCO, CA 94102
Categories: SAN FRANCISCO CA

5167 CLAYTON RD STE H 19.2 miles

5167 CLAYTON RD STE H
CONCORD, CA 94521
Categories: CONCORD CA

900 HYDE ST 19.2 miles

900 HYDE ST
SAN FRANCISCO, CA 94109
Categories: SAN FRANCISCO CA

2090 COMMERCE AVE 19.5 miles

2090 COMMERCE AVE
CONCORD, CA 94520
Categories: CONCORD CA

2198 15th St, 19.6 miles

2198 15th St,
San Francisco, CA 94114
Categories: San Francisco CA

2280 DIAMOND BLVD STE 520 19.7 miles

2280 DIAMOND BLVD STE 520
CONCORD, CA 94520
Categories: CONCORD CA

2231 GALAXY CT 19.7 miles

2231 GALAXY CT
CONCORD, CA 94520
Categories: CONCORD CA

5570 STOCKTON LOOP 19.8 miles

5570 STOCKTON LOOP
LIVERMORE, CA 94550
Categories: LIVERMORE CA

2477 PACHECO ST 20.0 miles

2477 PACHECO ST
CONCORD, CA 94520
Categories: CONCORD CA

2425 East Street, Suite 6 20.1 miles

2425 East Street, Suite 6
Concord, CA 94520
Categories: Concord CA

2540 EAST ST 20.2 miles

2540 EAST ST
CONCORD, CA 94520
Categories: CONCORD CA

2201 Post St, 20.2 miles

2201 Post St,
San Francisco, CA 94115
Categories: San Francisco CA

2300 SUTTER ST STE 102 20.3 miles

2300 SUTTER ST STE 102
SAN FRANCISCO, CA 94115
Categories: SAN FRANCISCO CA

2290 W EL CAMINO REAL STE 4 20.5 miles

2290 W EL CAMINO REAL STE 4
MOUNTAIN VIEW, CA 94040
Categories: MOUNTAIN VIEW CA

1805 ARNOLD DR 20.6 miles

1805 ARNOLD DR
MARTINEZ, CA 94553
Categories: MARTINEZ CA

315 S ABBOTT AVE 20.8 miles

315 S ABBOTT AVE
MILPITAS, CA 95035
Categories: MILPITAS CA

700 E CALAVERAS BLVD 20.8 miles

700 E CALAVERAS BLVD
MILPITAS, CA 95035
Categories: MILPITAS CA

200 MUIR RD Hacienda Bldg, 1st Floor 20.9 miles

200 MUIR RD Hacienda Bldg, 1st Floor
MARTINEZ, CA 94553
Categories: MARTINEZ CA

505 PARNASSUS AVE Ste 896 20.9 miles

505 PARNASSUS AVE Ste 896
SAN FRANCISCO, CA 94143
Categories: SAN FRANCISCO CA

4749 SURREY LN 21.0 miles

4749 SURREY LN
EL SOBRANTE, CA 94803
Categories: EL SOBRANTE CA

827 ARNOLD DR STE 70 21.0 miles

827 ARNOLD DR STE 70
MARTINEZ, CA 94553
Categories: MARTINEZ CA

1900 SULLIVAN AVE 21.1 miles

1900 SULLIVAN AVE
DALY CITY, CA 94015
Categories: DALY CITY CA

3237 ALHAMBRA AVE STE 2 21.4 miles

3237 ALHAMBRA AVE STE 2
MARTINEZ, CA 94553
Categories: MARTINEZ CA

3726 BARRETT AVE 21.5 miles

3726 BARRETT AVE
RICHMOND, CA 94805
Categories: RICHMOND CA

120 BROADWAY STE 23 21.7 miles

120 BROADWAY STE 23
RICHMOND, CA 94804
Categories: RICHMOND CA

573 W EL CAMINO REAL 21.9 miles

573 W EL CAMINO REAL
MOUNTAIN VIEW, CA 94040
Categories: MOUNTAIN VIEW CA

1195 E ARQUES AVE BLDG 1 22.2 miles

1195 E ARQUES AVE BLDG 1
SUNNYVALE, CA 94085
Categories: SUNNYVALE CA

1717 S MAIN ST 22.3 miles

1717 S MAIN ST
MILPITAS, CA 95035
Categories: MILPITAS CA

901 W EL CAMINO REAL 22.4 miles

901 W EL CAMINO REAL
SUNNYVALE, CA 94087
Categories: SUNNYVALE CA

901 NEVIN AVE BLDG B FLOOR 1 22.5 miles

901 NEVIN AVE BLDG B FLOOR 1
RICHMOND, CA 94801
Categories: RICHMOND CA

2500 GRANT RD 22.5 miles

2500 GRANT RD
MOUNTAIN VIEW, CA 94040
Categories: MOUNTAIN VIEW CA

2000 VALE RD 22.6 miles

2000 VALE RD
SAN PABLO, CA 94806
Categories: SAN PABLO CA

2737 WALSH AVE 22.9 miles

2737 WALSH AVE
SANTA CLARA, CA 95051
Categories: SANTA CLARA CA

2425 CHURCH LN 23.0 miles

2425 CHURCH LN
SAN PABLO, CA 94806
Categories: SAN PABLO CA

1910 N Capitol Ave 23.0 miles

1910 N Capitol Ave
San Jose, CA 95132
Categories: San Jose CA

988 WALSH AVE 23.5 miles

988 WALSH AVE
SANTA CLARA, CA 95050
Categories: SANTA CLARA CA

877 W Fremont Avenue, Ste H-2 23.7 miles

877 W Fremont Avenue, Ste H-2
Sunnyvale, CA 94087
Categories: Sunnyvale CA

2970 HILLTOP MALL RD STE 203 23.7 miles

2970 HILLTOP MALL RD STE 203
RICHMOND, CA 94806
Categories: RICHMOND CA

3774 RAILROAD AVE STE C 23.9 miles

3774 RAILROAD AVE STE C
PITTSBURG, CA 94565
Categories: PITTSBURG CA

1001 PITTSBURG ANTIOCH HWY STE B 24.2 miles

1001 PITTSBURG ANTIOCH HWY STE B
PITTSBURG, CA 94565
Categories: PITTSBURG CA

1825 CIVIC CENTER DR STE 7 24.4 miles

1825 CIVIC CENTER DR STE 7
SANTA CLARA, CA 95050
Categories: SANTA CLARA CA

500 Alfred Nobel Drive, Suite 115 24.6 miles

500 Alfred Nobel Drive, Suite 115
Hercules, CA 94547
Categories: Hercules CA

2339 BUCHANAN RD 24.8 miles

2339 BUCHANAN RD
ANTIOCH, CA 94509
Categories: ANTIOCH CA

1251 CALIFORNIA AVE STE 600 25.0 miles

1251 CALIFORNIA AVE STE 600
PITTSBURG, CA 94565
Categories: PITTSBURG CA

Drug and alcohol testing services are provided for employers and individuals and are administered for various reasons including Employment related such as pre-employment, random, post accident and reasonable suspicion, also US DOT-Part 40, Court Ordered, School and personal reasons.

Scheduling a drug, alcohol or any testing service at any of our Castro Valley, CA testing facilities is simple and easy. Call (800)221-4291 or you may schedule a test online 24/7 by clicking below and receive your donor pass/registration form with the testing center address and instructions via email.

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Customer Service Is Our #1 Priority- Our Drug Testing centers recognize that needing a drug, alcohol or occupational health test can be stressful at times. Accredited Drug Testing takes the stress out of a stressful situation and is available to answer any questions you may have and provide our services in a friendly, courteous and confidential manner. Call our scheduling department today at (800)221-4291.



View all available drug testing services


Types of Drug Testing Methods Available

Our testing centers provide many types of drug testing methods, below is a brief description of each method choose the one that is right for your need.


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Urine Test - Urine - Accredited Drug Testing provides drug testing utilizing the Urine screening method. Urine drug testing can be screened for 5, 7, 9, 10, 12 and 15 panel screenings. Urine drug tests can also include an expanded opiates analysis. Same day service is available and testing centers are located in all cities and in most cases within minutes from your home or office. The detection period for a urine drug test is up to 3-5 days and results are reported in most cases in 2- 3 days.

The procedure for a urine drug test is simple. A donor provides a urine specimen in a cup to a drug testing collection specialist who will then seal the specimen cup, complete various documentation including a chain of custody form, have the donor initial the specimen cup seal, provide identification and upon completion of the collection and paperwork the specimen will be sent in a secure manner by Currier to the laboratory for testing.


Hair Drug Testing - Accredited Drug Testing can provide a drug test utilizing the Hair follicle drug test method and a Hair drug test can be tested for 5, 10, and 12 panel screenings. The detection period for a hair drug test is up to 90 days and results are reported in most cases in 3 -5 days.

The hair drug test is becoming more frequently used by employers, courts and other government agencies due to the fact that the window of detection for illegal drug use for a hair is up to 90 days. Many courts have begun accepting hair testing in place of urine or blood testing and hair testing has been determined to be legally and scientifically admissible evidence in a court of law.

A hair drug test is a simple process whereby a drug testing collection specialist cuts approximately 120 strands of hair from the head or a specific amount from the body and submits the hair to a certified laboratory for analysis. A hair follicle drug test can be screened for a 5 panel, 10 panel or 12 panel test and can also include expanded opiates. If a donor does not have 1 ½ inches of hair on their head, body hair can be utilized, however, if the donor is bald and has none or very little body hair, a hair drug test is not an available option, a urine or oral/saliva test should be utilized.

In addition to our standard drug test panels, opioid screening can be added to any drug test to determine the use and/or abuse of any prescription drugs.

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US DOT Testing and Part 40 Compliance - Accredited Drug Testing provides DOT drug testing for pre-employment, post-accident, reasonable suspicion and return to duty for companies or employees regulated and covered by 49 CFR Part 40 including FMCSA, USCG, FTA, FRA, FAA, PHMSA. The drug test required by the Department of Transportation is a 5-panel urine test, which must be analyzed by SAMHSA certified laboratory and verified by a Medical Review Officer (MRO).

Additional DOT services include:

  • -DOT Consortium Membership (random testing)
  • -DOT Supervisor Training
  • -MVR Reports
  • -DOT Drug Policy Development
  • -DOT Physicals
  • -DOT Breath Alcohol Testing

Our Castro Valley, CA testing centers have certified DOT drug testing collection specialists who are trained in the proper collection of a DOT drug test.

The Opioid Overdose Crisis

Every day, more than 130 people in the United States die after overdosing on opioids. The misuse of and addiction to opioids—including prescription pain relievers, heroin, and synthetic opioids such as fentanyl—is a serious national crisis that affects public health as well as social and economic welfare. The Centers for Disease Control and Prevention estimates that the total "economic burden" of prescription opioid misuse alone in the United States is $78.5 billion a year, including the costs of healthcare, lost productivity, addiction treatment, and criminal justice involvement.

  • Roughly 21 to 29 percent of patients prescribed opioids for chronic pain misuse them.
  • Between 8 and 12 percent develop an opioid use disorder.
  • An estimated 4 to 6 percent who misuse prescription opioids transition to heroin.
  • About 80 percent of people who use heroin first misused prescription opioids.
  • Opioid overdoses increased 30 percent from July 2016 through September 2017 in 52 areas in 45 states.
  • The Midwestern region saw opioid overdoses increase 70 percent from July 2016 through September 2017.
  • Opioid overdoses in large cities increase by 54 percent in 16 states.

In the late 1990s, pharmaceutical companies reassured the medical community that patients would not become addicted to prescription opioid pain relievers, and healthcare providers began to prescribe them at greater rates. This subsequently led to widespread diversion and misuse of these medications before it became clear that these medications could indeed be highly addictive.3,4 Opioid overdose rates began to increase. In 2017, more than 47,000 Americans died as a result of an opioid overdose, including prescription opioids, heroin, and illicitly manufactured fentanyl, a powerful synthetic opioid.1That same year, an estimated 1.7 million people in the United States suffered from substance use disorders related to prescription opioid pain relievers, and 652,000 suffered from a heroin use disorder (not mutually exclusive)

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Court Ordered Testing - Accredited Drug Testing and our Castro Valley, CA drug testing centers also provide drug and alcohol testing for probation and other court ordered testing requirements. Testing services include ETG alcohol testing and drug testing utilizing urine and hair methods. Test results can be sent directly to Probation Officers, Judges, Attorneys or other parties as required. Strict confidentiality is assured.


Alcohol Testing - Accredited Drug Testing and our Castro Valley, CA testing centers provide alcohol testing including ETG testing in both urine and hair and Breath Alcohol Testing (BAT). Alcohol testing can be added to any drug test screening.

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Testing Facilities Nationwide - In addition to our drug and alcohol testing centers in Castro Valley, CA and the local area, Accredited Drug Testing has company owned and affiliated collection sites in all States and most cities to serve our clients' needs when traveling or employment related testing is required in multiple cities or States.


On-Site/Mobile Testing - Time Is Money!- Accredited Drug Testing provides On-Site drug testing services in all cities nationwide and can be used for construction sites, sporting events, job fairs and trucking/transportation companies, on site testing is available for DOT and NON-DOT regulated employers. In most cases, on-site mobile testing is cost effective when you have 10 or more employees needing to be drug or alcohol tested without leaving the job site.

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Employer testing/account setup - If you are an employer with at least 5 employees and would like to set up an account for future testing, it's simple and easy. Call us and speak with a client relations representative, (800)221-4291 it takes 5 minutes or less to complete. Account benefits include no setup fees, test discounts, invoicing, test status tracking and personalized customer service.

Does Your Company Have a Written Drug Policy? - Employee Drug & alcohol testing is utilized best when conducted in conjunction with a clear, written drug policy that is shared with all employees, along with employee education about the dangers of alcohol and drug abuse, supervisor training on the signs and symptoms of alcohol and drug abuse, and an Employee Assistance Program (EAP) to provide help for employees who may have an alcohol or drug problem. If your company does not have a written drug and alcohol policy or your current policy needs to be revised, Accredited Drug Testing specializes in the development and implementation of an employer's drug and alcohol policy which complies with state and federal law.


DNA Testing Services -Accredited Drug Testing provides DNA testing at testing centers Nationwide for paternity, immigration, and family relationship purposes. DNA testing centers are located in most cities and within minutes of your home or office.

DNA testing can provide an accurate determination of the probability of paternity at 99% more of who the child's biological father or mother is. The initial DNA test takes only a few minutes at the testing center and involves the swabbing of the child and alleged fathers mouth, which will provide saliva to be analyzed by a certified laboratory. Our DNA results are analyzed by a certified AABB laboratory and can be used in a legal proceeding to determine paternity or child custody related issues.

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Alcohol Testing Castro Valley, CA Services

(800)221-4291

For more information regarding the effects of drug abuse - Click Here

For more information on a drug free work place - Click Here

Handy Resources

Comprehensive Online Resources for Drug Testing

  1. National Institute on Drug Abuse (NIDA)

    Provides comprehensive information on drug testing and its role in substance use disorder treatment.

  2. FDA: Drug Testing

    Explains the FDA's role and regulations concerning drug testing for consumers.

  3. PDR.net

    Provides detailed drug information and safety updates through a mobile-friendly platform.

  4. BeSafeRx - FDA

    Resource by the FDA to help consumers identify and choose safe online pharmacies.

  5. SAMHSA: Drug Testing Resources for the Workplace

    Resources and guidelines for drug testing in the workplace.

  6. Drugs.com

    Provides drug information, side effects, and interactions for consumers and professionals.

  7. Drug Abuse Screening Test (DAST)

    Online version of the DAST to help individuals assess whether they have a drug problem.

  8. Merck Manuals

    Consumer-friendly medical resource providing comprehensive information on a wide array of health topics, including drug testing.

  9. SAMHSA Store

    Provides access to resources and publications on substance use prevention and treatment.

  10. National Association of Boards of Pharmacy (NABP)

    Information on state boards of pharmacy and regulations, including those related to drug testing.

  11. CDC: Workplace Health Promotion

    CDC's resources on substance use and drug testing in the workplace.

  12. Mayo Clinic: Drug Testing

    General information about the procedures and types of drug tests.

  13. MedlinePlus: Drug Testing

    Offers information about various drug tests and their uses in medical diagnosis and treatment.

  14. University of Rochester Medical Center Health Encyclopedia

    Provides a detailed entry on drug testing, including how tests are conducted and what they detect.

  15. World Health Organization (WHO)

    International guidelines and information on public health, including substance abuse and drug testing.

  16. Healthline: Drug Testing

    Consumer health site offering information on how drug tests work and what they look for.

  17. WebMD: Drug Testing

    Provides a patient-oriented overview of drug testing and its purposes.

  18. National Center for Biotechnology Information (NCBI)

    Provides a vast database of scientific studies, including research on drug testing and its effectiveness.

AI Overview

Overview of Drug Testing Collection Centers

Drug testing collection centers are specialized facilities where individuals submit biological samples for drug testing. These centers play a crucial role in the drug testing process, serving industries such as transportation, healthcare, sports, and many sectors requiring workplace safety and compliance with drug-free policies. This overview details the functions, types of tests conducted, and what individuals can expect during a visit to a drug testing collection center.

Functions of Drug Testing Collection Centers

Collection centers are primarily responsible for the secure and proper collection of samples, ensuring that they are uncontaminated and accurately reflect the subject's drug use status. They adhere to strict procedures to maintain confidentiality and integrity of the testing process.

Types of Tests Conducted

  • Urine Testing: The most common form of drug testing, used to detect recent use of drugs such as marijuana, cocaine, opiates, amphetamines, and others.
  • Hair Follicle Testing: Provides a longer detection window compared to urine testing and is used to analyze drug use over a period of months.
  • Saliva Testing: Used for its non-invasive nature and ability to detect immediate drug use.
  • Blood Testing: Although less common due to its invasive nature, it is the most accurate form of drug testing.

What to Expect at a Collection Center

  1. Identification Verification: Upon arrival, individuals must present valid identification to ensure that the samples correspond to the correct person.
  2. Sample Collection: Trained professionals collect samples in a manner that minimizes the chance of tampering or contamination. This might involve measures such as securing personal belongings and direct observation during sample provision.
  3. Chain of Custody: Each sample is handled with a documented chain of custody procedure to maintain its integrity from collection to testing laboratory.

Importance of Collection Centers

Drug testing collection centers are vital for ensuring the effectiveness and reliability of the drug testing process. They provide essential services that help employers maintain a safe and productive workplace, enforce legal and regulatory requirements, and assist in rehabilitation processes. The professionalism and accuracy practiced by these centers are crucial for upholding the trust and safety standards expected in many professional environments.

Local Area Info: Castro Valley, California

Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. As of the 2010 census, it is the fifth most populous unincorporated area in California and the twenty-third most populous in the United States.[citation needed] The population was 61,388 at the 2010 census.

With the arrival of Europeans, Castro Valley was part of the land granted to Mission San Jose in 1797. The area Castro Valley now occupies was part of the extensive colony of New Spain in what was the state of Alta California.

Castro Valley was part of the original 28,000 acre (110 km²) land grant given to Castro in 1840, called Rancho San Lorenzo. This land grant included Hayward, San Lorenzo, and Castro Valley, including Crow Canyon, Cull Canyon, and Palomares Canyons. Castro had a gambling habit and had to sell off portions of his land to pay gambling debts. The last of his holding was sold in a sheriff's sale in 1864 to Faxon Atherton for $400,000.

Show Regional Data

Median Age: 40.4 years

Ancestries: Ancestries: English (3.6%), German (3.4%), Italian (2.9%), Irish (2.8%), European (2.8%), Portuguese (2.6%).

Elevation: 180 feet

Population Density:

Zip Codes: 94546, 94552, 94577

(800) 221-4291