Napa, CA Facts, Population, Income, Demographics, Economy

Population (total): Population in 2017: 79,774 (100% urban, 0% rural). >Population change since 2000: +9.9%

Population (female): 40,563

Median Age: 38.5 years

Poverty (overall): Percentage of residents living in poverty in 2017: 5.5%

Poverty (breakdown): (5.9% for White Non-Hispanic residents, 17.4% for Black residents, 9.8% for Hispanic or Latino residents, 8.8% for American Indian residents, 18.8% for Native Hawaiian and other Pacific Islander residents, 12.5% for other race residents, 11.0% for two or more races residents)

Sex Offenders: According to our research of California and other state lists, there were 93 registered sex offenders living in Napa, California as of January 18, 2021. The ratio of all residents to sex offenders in Napa is 865 to 1.The ratio of registered sex offenders to all residents in this city is near the st

Elevation: 17 feet

Land Area: 17.7 square miles.

Population Density:

Median Incomes:
      Estimated median household income in 2017: $82,361 (it was $49,154 in 2000)
      Estimated per capita income in 2017: $39,960 (it was $23,642 in 2000)
      Estimated median house or condo value in 2017: $633,200 (it was $230,500 in 2000) Napa:$633,200CA:$509,400

The racial difference against the Chinese, the end of slavery in Brazil, and the civil war in the United States, saw the need to recruit a new group for doing the work to expand global trade and commerce. For investors in Northern European ports engaged in Atlantic Ocean commerce, this reality changed the source of labor to Southern Europeans, mostly Catholic. The next wave of cheap laborers also came from coastal provinces; but close to the Port of Genova in Italy. In the 1880s, these illiterate young men from the hillside villages of Valbrevenna signed contracts as "bracianti" with shipping companies for passage to work in Napa County silver mines at Knoxville, Oat Hill, the Sierra foothills and on ranches in Uruguay-Argentina. In the history of Napa, the names of Arata, Banchero, Borreo, Rossi, Navone, Bartolucci, Massa are surnames of many families who re-planted their roots as a separate community at "Spanish Town" around the St. John's Catholic Church, and Napa "Little Italy" on East First Street, Juarez, and Third Street.

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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)

Hair Follicle Drug Testing 1

Hair Follicle Drug Testing Napa, CA

Accredited Drug Testing Inc provides Hair Follicle drug testing Napa, CA for individuals and employers needing a drug test utilizing the hair follicle analysis process. To schedule a hair follicle drug test in Napa, CA, Call (800) 221-4291. Most testing centers are within minutes of your home or office.


Hair follicle drug testing Napa, CA is available for 5, 10, and 12 panel drug screenings.

To schedule a Hair Follicle Drug Test at one of our testing centers in the Grady county area, Call (800) 221-4291, Same Day Service Available. Testing centers do not require an appointment, but you must call and register for the test.

Hair follicle drug testing is becoming a more popular method by employers and individuals in need of a drug test due to the detection time frame being longer than a standard urine test.

Local Hair follicle drug testing Napa, CA centers are available to assist our clients throughout the entire process and all of our hair follicle drug testing Napa, CA facilities have certified drug testing technicians available to conduct a hair follicle drug test collection.

Hair Follicle Drug Test

In recent years the method to conduct drug testing has more frequently included a hair follicle drug test. Many employers, courts and Substance Abuse Professional are requiring a hair follicle drug test instead of a standard urine test. Hair follicle drug tests are used by employers who have zero tolerance drug use policies, courts and individuals on probation. The primary benefit of a hair follicle drug test include a much longer detection period for drug use which typically is up to 90 days. However, when screening drug use within the last 5 days the urine test continues to be the most accurate test.

Hair Follicle Drug Test Process

The procedure used to perform a hair follicle test is simple, the drug testing specialist will cut approximately 120 strands of hair (not really a lot) utilize a chain of custody procedure and send the hair to a certified laboratory for analysis. Drug testing centers require at least 1.5 inches of hair to perform this test and the hair generally needs to come from the head, however if the donor does not have head hair certain testing centers can use hair from chest, leg or arm pit.

If a donor has no hair on their body, than a hair test cannot be performed!

Hair Follicle Drug Test Results

Once the hair follicles have been analyzed by a certified laboratory they will then be reviewed and then verified by a Medical Review Officer (licensed Physician) who will than release the results. Generally a negative hair follicle drug test result is available in 2-3 days. A non-negative hair follicle drug test is available in approximately 5 days.

Urine cut-off levels are expressed in nanograms per milliliter (ng/mL) or as a weight of drug per unit volume of urine. Hair cut-off levels are expressed in picograms per milligram (pg/mg) or as a weight of drug per unit weight of hair

5 Panel Hair Follicle Drug Test

The 5 panel hair follicle drug test screens for the following

  • Amphetamine
  • Cocaine
  • Marijuana
  • Opiates
  • Phencyclidine

5 Panel w/ Expanded Opiates Hair Follicle Drug Test

The 5 panel w/ expanded Opiates hair drug test screens for the standard 5 drugs but will also screen for Opiate class drugs such as pain killers, which may indicate abuse of prescription drugs

  • Amphetamine
  • Cocaine
  • Codeine
  • Marijuana
  • Morphine
  • Phencyclidine
  • Hydrocodone
  • Hydromorphone
  • Oxycodone
  • Oxymorphone
  • 6 AM- Heroine

10 Panel Hair Follicle Drug Test

The 10 panel hair follicle drug test screens for the following

  • Amphetamines
  • Barbiturates
  • Benzodiazepines
  • Cocaine
  • Marijuana
  • Methadone
  • Methamphetamine
  • Opiates
  • Phencyclidine
  • Propoxyphene

12 Panel Hair Follicle Drug Test

The 12 panel hair follicle drug test screens for the following

  • Amphetamines
  • Barbiturates
  • Benzodiazepines
  • Cocaine
  • Marijuana
  • Meperidine
  • Methadone
  • Opiates
  • Oxycodone
  • Phencyclidine
  • Propoxyphene
  • Tramadol

To schedule a Hair follicle Drug Testing Napa, CA Call (800)221-4291.

Accredited Drug Testing Inc. is pleased to provide hair follicle drug testing, alcohol testing, occupational health and DNA testing services in Napa, CA.


3260 Beard Road, Suite A 1.8 miles

3260 Beard Road, Suite A
Napa, CA 94558
Categories: Napa CA

1000 TRANCAS ST 1.9 miles

1000 TRANCAS ST
NAPA, CA 94558
Categories: NAPA CA

3285 CLAREMONT WAY FL 2 1.9 miles

3285 CLAREMONT WAY FL 2
NAPA, CA 94558
Categories: NAPA CA

3435 VALLE VERDE DR STE B 2.2 miles

3435 VALLE VERDE DR STE B
NAPA, CA 94558
Categories: NAPA CA

347 ANDRIEUX ST 9.8 miles

347 ANDRIEUX ST
SONOMA, CA 95476
Categories: SONOMA CA

300 HOSPITAL DR 11.7 miles

300 HOSPITAL DR
VALLEJO, CA 94589
Categories: VALLEJO CA

975 SERENO DR 11.8 miles

975 SERENO DR
VALLEJO, CA 94589
Categories: VALLEJO CA

1411 Oliver Road, Suite 130 12.0 miles

1411 Oliver Road, Suite 130
Fairfield, CA 94534
Categories: Fairfield CA

2470 HILBORN RD STE 110 12.7 miles

2470 HILBORN RD STE 110
FAIRFIELD, CA 94534
Categories: FAIRFIELD CA

17 Tennessee St 13.0 miles

17 Tennessee St
Vallejo, CA 94590
Categories: Vallejo CA

243 GEORGIA ST STE B 13.6 miles

243 GEORGIA ST STE B
VALLEJO, CA 94590
Categories: VALLEJO CA

1100 ROSE DR ste 140 15.8 miles

1100 ROSE DR ste 140
BENICIA, CA 94510
Categories: BENICIA CA

2042 Columbus Pkwy, 15.9 miles

2042 Columbus Pkwy,
Benicia, CA 94510
Categories: Benicia CA

200 BUTCHER RD 15.9 miles

200 BUTCHER RD
VACAVILLE, CA 95687
Categories: VACAVILLE CA

1 QUALITY DR 16.2 miles

1 QUALITY DR
VACAVILLE, CA 95688
Categories: VACAVILLE CA

418 DAVIS ST STE B 16.7 miles

418 DAVIS ST STE B
VACAVILLE, CA 95688
Categories: VACAVILLE CA

770 Mason St, 16.8 miles

770 Mason St,
Vacaville, CA 95688
Categories: Vacaville CA

3900 LAKEVILLE HWY 16.8 miles

3900 LAKEVILLE HWY
PETALUMA, CA 94954
Categories: PETALUMA CA

770 MASON ST 16.9 miles

770 MASON ST
VACAVILLE, CA 95688
Categories: VACAVILLE CA

538 STONE RD STE G 17.4 miles

538 STONE RD STE G
BENICIA, CA 94510
Categories: BENICIA CA

1000 NUT TREE RD 18.5 miles

1000 NUT TREE RD
VACAVILLE, CA 95687
Categories: VACAVILLE CA

520 6TH ST 18.5 miles

520 6TH ST
RODEO, CA 94572
Categories: RODEO CA

1550 Professional Drive, Suite B 18.9 miles

1550 Professional Drive, Suite B
Petaluma, CA 94954
Categories: Petaluma CA

400 N MCDOWELL BLVD 19.1 miles

400 N MCDOWELL BLVD
PETALUMA, CA 94954
Categories: PETALUMA CA

151 LYNCH CREEK WAY 19.2 miles

151 LYNCH CREEK WAY
PETALUMA, CA 94954
Categories: PETALUMA CA

153 LYNCH CREEK WAY 19.2 miles

153 LYNCH CREEK WAY
PETALUMA, CA 94954
Categories: PETALUMA CA

500 Alfred Nobel Drive, Suite 115 19.3 miles

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

709 PETALUMA BLVD N 19.8 miles

709 PETALUMA BLVD N
PETALUMA, CA 94952
Categories: PETALUMA CA

10 WOODLAND RD 20.0 miles

10 WOODLAND RD
SAINT HELENA, CA 94574
Categories: SAINT HELENA CA

180 ROWLAND WAY 20.3 miles

180 ROWLAND WAY
NOVATO, CA 94945
Categories: NOVATO CA

1370 MEDICAL CENTER DR STE B 21.8 miles

1370 MEDICAL CENTER DR STE B
ROHNERT PARK, CA 94928
Categories: ROHNERT PARK CA

3237 ALHAMBRA AVE STE 2 22.1 miles

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

2970 HILLTOP MALL RD STE 203 22.2 miles

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

200 MUIR RD Hacienda Bldg, 1st Floor 22.5 miles

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

827 ARNOLD DR STE 70 22.7 miles

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

4749 SURREY LN 22.9 miles

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

6174 STATE FARM DR 23.1 miles

6174 STATE FARM DR
ROHNERT PARK, CA 94928
Categories: ROHNERT PARK CA

5900 STATE FARM DR 23.2 miles

5900 STATE FARM DR
ROHNERT PARK, CA 94928
Categories: ROHNERT PARK CA

1805 ARNOLD DR 23.4 miles

1805 ARNOLD DR
MARTINEZ, CA 94553
Categories: MARTINEZ CA

2425 CHURCH LN 23.5 miles

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

20 ELAINE DR 23.5 miles

20 ELAINE DR
SANTA ROSA, CA 95409
Categories: SANTA ROSA CA

6025 LABATH AVE ste 104 23.9 miles

6025 LABATH AVE ste 104
ROHNERT PARK, CA 94928
Categories: ROHNERT PARK CA

2000 VALE RD 24.0 miles

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

99 MONTECILLO RD MOB 1 24.0 miles

99 MONTECILLO RD MOB 1
SAN RAFAEL, CA 94903
Categories: SAN RAFAEL CA

1111 SONOMA AVE STE 121 24.6 miles

1111 SONOMA AVE STE 121
SANTA ROSA, CA 95405
Categories: SANTA ROSA CA

990 Sonoma Ave, 24.6 miles

990 Sonoma Ave,
Santa Rosa, CA 95404
Categories: Santa Rosa CA

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Alcohol Testing Napa, 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

Hair Follicle Drug Testing: An Overview

Hair follicle drug testing is a method used to detect the use of illicit drugs or the misuse of prescription drugs over an extended period. Unlike urine tests, which can detect recent drug use, hair follicle testing provides a longer window of detection, typically up to 90 days. This overview explores how hair follicle drug testing works, its applications, and its benefits.

How Hair Follicle Drug Testing Works

The process involves taking a small sample of hair, usually from the head but sometimes from the body if scalp hair is insufficient. The hair is tested to identify drugs and their metabolites, which are deposited in the hair from the bloodstream. This method is sensitive to a wide range of substances, including marijuana, cocaine, opiates, methamphetamine, and phencyclidine (PCP).

Applications of Hair Follicle Drug Testing

  • Employment Screening: Many employers use hair follicle testing as part of their pre-employment screening processes and in regular checks to ensure a drug-free workplace.
  • Legal and Forensic Cases: This testing is used in legal settings to provide evidence in custody disputes, DUI cases, and other legal matters requiring proof of drug use.
  • Rehabilitation Monitoring: Health care providers and rehab centers use hair tests to monitor individuals recovering from drug addiction.

Advantages of Hair Follicle Drug Testing

  1. Long Detection Period: Can detect drug use for up to 90 days, making it more effective for identifying long-term drug use than other testing methods.
  2. Tamper Resistance: The nature of hair sample collection makes it difficult to tamper with or substitute samples, providing more accurate results.
  3. Non-invasive: The process is simple and does not require the handling of bodily fluids, making it less invasive and safer to administer.

Considerations and Limitations

While hair follicle drug testing is highly effective, there are considerations to keep in mind:

  • Growth Rate Variability: Hair growth rates can vary from person to person, potentially affecting the detection window.
  • Potential for External Contamination: Drugs can sometimes be absorbed from the environment, leading to potential false positives, though washing the hair sample prior to testing can mitigate this risk.
  • Cultural and Personal Concerns: The requirement of hair samples can raise concerns among those with hair loss or individuals whose cultural practices affect hair grooming or styling.

Hair follicle drug testing is a reliable and comprehensive method for detecting drug use over an extended period. It is widely used across various sectors for its accuracy and tamper-resistant methodology, making it a valuable tool in maintaining drug-free environments and supporting legal and medical interventions.

Local Area Info: Napa County, California

Napa County is a county north of San Pablo Bay in the northern portion of the U.S. state of California. As of the 2010 census, the population was 136,484. The county seat is the City of Napa. Napa County was one of the original counties of California, created in 1850 at the time of statehood. Parts of the county's territory were given to Lake County in 1861.

Napa County, once the producer of many different crops, is known today for its regional wine industry, rising to the first rank of wine regions with France by local wineries Stag's Leap Wine Cellars and Chateau Montelena winning the "Judgment of Paris" in 1976.

In prehistoric times, the valley was inhabited by the Patwin Native Americans, with possible habitation by Wappo tribes in the northwestern foothills. Most villages are thought to have been constructed near the floodplains of watercourses that drain the valley. Their food consisted of wild roots, acorns, small animals, earthworms, grasshoppers, and bread made from crushed California buckeye kernels. In winter they would construct huts made of tree branches. In summer they camped near rivers and streams. In winter months, they were half clad in wild animal skins and at other times they wore no clothing. The maximum prehistoric population is thought not to have exceeded 5000 persons.

Show Regional Data

Population (total): Population in 2017: 79,774 (100% urban, 0% rural). >Population change since 2000: +9.9%

Population (female): 40,563

Median Age: 38.5 years

Poverty (overall): Percentage of residents living in poverty in 2017: 5.5%

Poverty (breakdown): (5.9% for White Non-Hispanic residents, 17.4% for Black residents, 9.8% for Hispanic or Latino residents, 8.8% for American Indian residents, 18.8% for Native Hawaiian and other Pacific Islander residents, 12.5% for other race residents, 11.0% for two or more races residents)

Sex Offenders: According to our research of California and other state lists, there were 93 registered sex offenders living in Napa, California as of January 18, 2021. The ratio of all residents to sex offenders in Napa is 865 to 1.The ratio of registered sex offenders to all residents in this city is near the st

Elevation: 17 feet

Land Area: 17.7 square miles.

Population Density:

Median Incomes:
      Estimated median household income in 2017: $82,361 (it was $49,154 in 2000)
      Estimated per capita income in 2017: $39,960 (it was $23,642 in 2000)
      Estimated median house or condo value in 2017: $633,200 (it was $230,500 in 2000) Napa:$633,200CA:$509,400

The racial difference against the Chinese, the end of slavery in Brazil, and the civil war in the United States, saw the need to recruit a new group for doing the work to expand global trade and commerce. For investors in Northern European ports engaged in Atlantic Ocean commerce, this reality changed the source of labor to Southern Europeans, mostly Catholic. The next wave of cheap laborers also came from coastal provinces; but close to the Port of Genova in Italy. In the 1880s, these illiterate young men from the hillside villages of Valbrevenna signed contracts as "bracianti" with shipping companies for passage to work in Napa County silver mines at Knoxville, Oat Hill, the Sierra foothills and on ranches in Uruguay-Argentina. In the history of Napa, the names of Arata, Banchero, Borreo, Rossi, Navone, Bartolucci, Massa are surnames of many families who re-planted their roots as a separate community at "Spanish Town" around the St. John's Catholic Church, and Napa "Little Italy" on East First Street, Juarez, and Third Street.

(800) 221-4291