Laboratory/Blood Testing Centers
Altadena, CA
Lab/Blood Testing Centers
Altadena, CA
Accredited Drug Testing in Altadena, California provides confidential laboratory analyzed testing services at our Altadena, CA testing locations for medical and personal testing purposes for health, prevention and early detection of diseases. Patients can directly schedule a laboratory test including blood and urinalysis at multiple laboratory/blood testing centers in Altadena, California and the surrounding areas. Same day service is available and most testing centers in the Altadena, CA area are within minutes of your home or office.
960 E GREEN ST, STE 164 3.1 miles
PASADENA, CA 91106
1750 E COLORADO BLVD 3.2 miles
PASADENA, CA 91106
100 W CALIFORNIA BLVD 3.9 miles
PASADENA, CA 91105
50 ALESSANDRO PL. SUITE A10 4.2 miles
PASADENA, CA 91105
416 W LAS TUNAS DR, STE 204 6.2 miles
SAN GABRIEL, CA 91776
330 W. LAS TUNAS DR. STE 2 6.2 miles
SAN GABRIEL, CA 91776
940 E MAIN ST 6.3 miles
ALHAMBRA, CA 91801
544 N GLENDALE AVE 6.9 miles
GLENDALE, CA 91206
100 S RAYMOND AVE 7.0 miles
ALHAMBRA, CA 91801
56 E DUARTE RD 7.1 miles
ARCADIA, CA 91006
801 S CHEVY CHASE DR 7.2 miles
GLENDALE, CA 91205
801 S Chevy Chase Dr Ste 50, 7.2 miles
Glendale, CA 91205
221 E GLENOAKS BLVD STE 130 7.3 miles
GLENDALE, CA 91207
230 N MARYLAND AVE STE 110 7.6 miles
GLENDALE, CA 91206
432 W BROADWAY 8.1 miles
GLENDALE, CA 91204
117 E LIVE OAK AVE STE 101 8.2 miles
ARCADIA, CA 91006
222 W EULALIA ST STE 101 8.4 miles
GLENDALE, CA 91204
9350 FLAIR DR Ste 102 9.0 miles
EL MONTE, CA 91731
4500 RIVERVIEW AVE 9.0 miles
EL MONTE, CA 91731
3144 SANTA ANITA AVE STE 205 10.0 miles
EL MONTE, CA 91733
1526 N EDGEMONT ST FL 1 10.3 miles
LOS ANGELES, CA 90027
823 N BROADWAY 10.7 miles
LOS ANGELES, CA 90012
1300 N VERMONT AVE 11.3 miles
LOS ANGELES, CA 90027
124 N VIGNES ST 11.4 miles
LOS ANGELES, CA 90012
501 S BUENA VISTA ST 11.4 miles
BURBANK, CA 91505
132 S BEAUDRY AVE 11.5 miles
LOS ANGELES, CA 90012
2701 W ALAMEDA AVE STE 203 11.6 miles
BURBANK, CA 91505
2300 W BEVERLY BLVD 11.6 miles
MONTEBELLO, CA 90640
420 E 3rd St Ste 802, 11.7 miles
Los Angeles, CA 90013
333 S HOPE ST STE C145 11.7 miles
LOS ANGELES, CA 90071
169 S ALVARADO ST STE 101 11.8 miles
LOS ANGELES, CA 90057
2131 W 3RD ST Ste 4 11.9 miles
LOS ANGELES, CA 90057
6520 N IRWINDALE AVE STE 100 12.0 miles
IRWINDALE, CA 91702
309 W BEVERLY BLVD 12.1 miles
MONTEBELLO, CA 90640
1127 Wilshire Blvd Ste 203&204, 12.1 miles
Los Angeles, CA 90017
1225 WILSHIRE BLVD 12.1 miles
LOS ANGELES, CA 90017
6000 N IRWINDALE AVE STE A 12.2 miles
IRWINDALE, CA 91702
15705 ARROW HWY STE 6B 12.2 miles
IRWINDALE, CA 91706
3413 W PACIFIC AVE 102 12.4 miles
BURBANK, CA 91505
3413 W PACIFIC AVE 12.4 miles
BURBANK, CA 91505
1313 W 8TH ST ste 100 12.4 miles
LOS ANGELES, CA 90017
929 GEORGIA ST 12.5 miles
LOS ANGELES, CA 90015
5345 IRWINDALE AVE 12.5 miles
IRWINDALE, CA 91706
12801 CROSSROADS PKWY S Ste 150 12.6 miles
CITY OF INDUSTRY, CA 91746
14148 FRANCISQUITO AVE 12.8 miles
BALDWIN PARK, CA 91706
1253 VINE ST ste 19A 13.0 miles
LOS ANGELES, CA 90038
1400 S GRAND AVE STE 612 13.1 miles
LOS ANGELES, CA 90015
2476 S ATLANTIC BLVD 13.1 miles
COMMERCE, CA 90040
3545 WILSHIRE BLVD STE 325 13.2 miles
LOS ANGELES, CA 90010
1907 E WASHINGTON BLVD 13.2 miles
LOS ANGELES, CA 90021
3851 S SOTO ST 13.3 miles
VERNON, CA 90058
3688 S Soto St 13.3 miles
Vernon, CA 90058
6538 TELEGRAPH RD 13.5 miles
LOS ANGELES, CA 90040
725 S ORANGE AVE 13.5 miles
WEST COVINA, CA 91790
1300 N LA BREA AVE 13.8 miles
HOLLYWOOD, CA 90028
4580 PACIFIC BLVD 14.1 miles
VERNON, CA 90058
3430 GARFIELD AVE 14.2 miles
LOS ANGELES, CA 90040
11432 VANOWEN ST 14.2 miles
N HOLLYWOOD, CA 91605
3364 E SLAUSON AVE 14.2 miles
VERNON, CA 90058
3320 S HILL ST 14.3 miles
LOS ANGELES, CA 90007
11631 VICTORY BLVD STE 101 14.6 miles
NORTH HOLLYWOOD, CA 91606
110 N LA BREA AVE 14.6 miles
INGLEWOOD, CA 90301
5455 WILSHIRE BLVD STE 1802 15.2 miles
LOS ANGELES, CA 90036
250 S GRAND AVE 15.3 miles
GLENDORA, CA 91741
2231 S WESTERN AVE 15.4 miles
LOS ANGELES, CA 90018
6529 SEVILLE AVE 15.4 miles
HUNTINGTON PARK, CA 90255
8337 TELEGRAPH RD STE 104 15.6 miles
PICO RIVERA, CA 90660
6405 WILKINSON AVE 15.6 miles
NORTH HOLLYWOOD, CA 91606
16025 GALE AVE STE B10 15.9 miles
CITY OF INDUSTRY, CA 91745
5862 AVALON BLVD 15.9 miles
LOS ANGELES, CA 90003
12462 PUTNAM ST ste 402 15.9 miles
WHITTIER, CA 90602
554 E San Bernardino Rd Ste 10, 15.9 miles
Covina, CA 91723
12385 WASHINGTON BLVD 16.1 miles
WHITTIER, CA 90606
12401 WASHINGTON BLVD 16.1 miles
WHITTIER, CA 90602
2640 E GARVEY AVE S STE 106 16.1 miles
WEST COVINA, CA 91791
8700 BEVERLY BLVD 16.3 miles
WEST HOLLYWOOD, CA 90048
8501 Wilshire Blvd Suite 305, 16.5 miles
Beverly Hills, CA 90211
8512 Whitworth Dr 16.8 miles
LOS ANGELES, CA 90035
17487 HURLEY ST 17.1 miles
CITY OF INDUSTRY, CA 91744
11817 TELEGRAPH RD 17.2 miles
SANTA FE SPRINGS, CA 90670
13652 CANTARA ST 17.2 miles
PANORAMA CITY, CA 91402
13466 OSBORNE ST 17.2 miles
PACOIMA, CA 91331
5971 VENICE BLVD FL 4 17.3 miles
LOS ANGELES, CA 90034
4312 Woodman Ave Ste 102 17.4 miles
Sherman Oaks, CA 91423
11411 BROOKSHIRE AVE STE 408 17.5 miles
DOWNEY, CA 90241
1200 ARROYO ST 17.8 miles
SAN FERNANDO, CA 91340
1350 W COVINA BLVD 18.1 miles
SAN DIMAS, CA 91773
3611 MLK Blvd STE 108 18.1 miles
LYNWOOD, CA 90262
6410 VAN NUYS BLVD STE B 18.1 miles
VAN NUYS, CA 91401
15141 Whittier Blvd Ste 125, 18.2 miles
Whittier, CA 90603
18335 VALLEY BLVD 18.3 miles
LA PUENTE, CA 91744
8780 VAN NUYS BLVD BLDG C 18.4 miles
PANORAMA CITY, CA 91402
9353 IMPERIAL HWY GARDEN MEDICAL OFFICE,3RD FLOOR 18.5 miles
DOWNEY, CA 90242
9561 VAN NUYS BLVD 18.6 miles
PANORAMA CITY, CA 91402
18575 Gale Ave Ste 155 18.7 miles
City of Industry, CA 91748
18575 GALE AVE STE 295 18.7 miles
CITY OF INDUSTRY, CA 91748
14850 ROSCOE BLVD 18.7 miles
PANORAMA CITY, CA 91402
2707 E VALLEY BLVD STE 116 19.0 miles
WEST COVINA, CA 91792
15211 VANOWEN ST STE 105 19.0 miles
VAN NUYS, CA 91405
15211 VANOWEN ST STE 319 19.0 miles
VAN NUYS, CA 91405
13440 IMPERIAL HWY 19.3 miles
SANTA FE SPRINGS, CA 90670
11152 S MAIN ST 19.5 miles
LOS ANGELES, CA 90061
13920 BREGER AVE 19.5 miles
SYLMAR, CA 91342
14901 RINALDI ST STE 204 19.6 miles
MISSION HILLS, CA 91345
15031 RINALDI ST 19.8 miles
MISSION HILLS, CA 91345
5525 W SLAUSON AVE 19.8 miles
LOS ANGELES, CA 90056
10630 Sepulveda Blvd STE 100 19.9 miles
Mission Hills, CA 91345
757 WESTWOOD PLZ 19.9 miles
LOS ANGELES, CA 90095
16135 LEADWELL ST 20.2 miles
VAN NUYS, CA 91406
801 CORPORATE CENTER DR STE 130 20.8 miles
POMONA, CA 91768
11560 W PICO BLVD 20.9 miles
LOS ANGELES, CA 90064
16300 ROSCOE BLVD STE 1A 20.9 miles
VAN NUYS, CA 91406
7300 ALONDRA BLVD STE 108 20.9 miles
PARAMOUNT, CA 90723
16444 PARAMOUNT BLVD 21.1 miles
PARAMOUNT, CA 90723
11645 WILSHIRE BLVD STE 830 21.2 miles
LOS ANGELES, CA 90025
11611 SAN VICENTE BLVD 21.2 miles
LOS ANGELES, CA 90049
16660 PARAMONT BLVD STE 102 21.3 miles
PARAMOUNT, CA 90723
12001 W WASHINGTON BLVD 21.3 miles
LOS ANGELES, CA 90066
15330 VALLEY VIEW AVE STE 1 21.4 miles
LA MIRADA, CA 90638
12212 W WASHINGTON BLVD 21.5 miles
LOS ANGELES, CA 90066
2301 W EL SEGUNDO BLVD 22.0 miles
HAWTHORNE, CA 90250
1716 W HOLT AVE 22.0 miles
POMONA, CA 91768
8726 S SEPULVEDA BLVD 22.0 miles
LOS ANGELES, CA 90045
11633 HAWTHORNE BLVD #215 22.1 miles
HAWTHORNE, CA 90250
8800 S SEPULVEDA BLVD STE 8 22.1 miles
LOS ANGELES, CA 90045
2499 S WILMINGTON AVE 22.1 miles
COMPTON, CA 90220
16700 VALLEY VIEW AVE STE 180 22.1 miles
LA MIRADA, CA 90638
16702 VALLEY VIEW AVE 22.1 miles
LA MIRADA, CA 90638
8930 S SEPULVEDA BLVD STE 200 22.1 miles
LOS ANGELES, CA 90045
15401 S MAIN ST 22.2 miles
GARDENA, CA 90248
6033 W CENTURY BLVD STE 200 22.5 miles
LOS ANGELES, CA 90045
9601 S SEPULVEDA BLVD 22.5 miles
LOS ANGELES, CA 90045
2121 SANTA MONICA BLVD 22.7 miles
SANTA MONICA, CA 90404
1300 W 155TH ST STE 109 22.8 miles
GARDENA, CA 90247
1908 SANTA MONICA BLVD STE 5 22.9 miles
SANTA MONICA, CA 90404
16630 S BROADWAY ST 22.9 miles
GARDENA, CA 90248
18250 Roscoe Blvd Ste 120, 23.0 miles
Northridge, CA 91325
566 E LAMBERT RD 23.0 miles
BREA, CA 92821
2720 N HARBOR BLVD STE 130 23.1 miles
FULLERTON, CA 92835
1250 16TH ST 23.2 miles
SANTA MONICA, CA 90404
920 N NASH ST 23.2 miles
EL SEGUNDO, CA 90245
5220 CLARK AVE STE 445 23.2 miles
LAKEWOOD, CA 90712
5205 Lakewood Blvd 23.3 miles
Lakewood, CA 90712
5203 LAKEWOOD BLVD 23.3 miles
LAKEWOOD, CA 90712
19301 S SANTA FE AVE Ste 120 23.4 miles
COMPTON, CA 90221
209-1 Takashiho Yomitan Village 23.4 miles
SANTA MONICA, CA 90403
40 CENTERPOINTE DR 23.4 miles
LA PALMA, CA 90623
2151 N HARBOR BLVD 23.5 miles
FULLERTON, CA 92835
1950 SUNNYCREST DR STE 1800 23.5 miles
FULLERTON, CA 92835
18646 OXNARD ST 23.5 miles
TARZANA, CA 91356
1001 E IMPERIAL HWY 23.5 miles
BREA, CA 92821
1700 E WALNUT AVE 23.6 miles
EL SEGUNDO, CA 90245
502 S GAREY AVE 23.7 miles
POMONA, CA 91766
14619 PRAIRIE AVE 23.7 miles
LAWNDALE, CA 90260
390 N SEPULVEDA BLVD STE 1000 23.9 miles
EL SEGUNDO, CA 90245
27558 SIERRA HWY 24.1 miles
SANTA CLARITA, CA 91351
5451 LA PALMA AVE STE 24 24.3 miles
LA PALMA, CA 90623
1149 W 190TH ST 24.6 miles
GARDENA, CA 90248
19042 SOLEDAD CANYON RD 24.8 miles
SANTA CLARITA, CA 91351
20401 AVALON BLVD STE C 24.9 miles
CARSON, CA 90746
Testing services include physician referral, collection of the specimen, complete laboratory analysis and confidential and secure result reporting.
Common Lab/Blood Tests Performed in Altadena, CA Include:
- Lipid/Cholesterol Test
- STD Testing
- Diabetes Testing
- Thyroid Testing
- Hemoglobin A1C Testing
- Complete Blood Count (CBC) Testing
- Hepatitis Testing
- Basic Metabolic Testing
- Liver Function Testing
- Hormone Testing
** Patients who have high insurance deductibles, co-pays or do not have insurance can access important health and wellness testing by scheduling/Ordering a confidential clinical test through Accredited Drug Testing By Phone or On-line.
The process to schedule a lab/blood test in Altadena, California is fast and easy!
Step 1: Schedule/Order your test online at www.accrediteddrugtesting.com/lab-test-order or call our scheduling department at 800-221-4291. You do not need to visit a doctor to order a test.
Step 2: Provide confidential and secure patient information including the type of test, zip code of the location area you would like to take the test, make payment and you will receive a patient registration form by email where you can immediately proceed to the testing center. Same day service is available. Your test registration pass will have the testing location address and hours of operation.
Step 3: After your test has been analyzed by one of our national CLIA and FDA certified laboratories (Quest/ LabCorp) your results will be sent through a confidential, secure and encrypted portal to the email address that you provided. In the event that the test is non-negative, abnormal or other circumstances, a consultation with the referring physician is available.
Blood Testing Altadena, California
A blood test performed in Altadena, CA is a laboratory analysis performed on a blood sample that is usually extracted from a vein in the arm using a hypodermic needle, or via fingerprick. Multiple tests for specific blood components, such as a glucose test or a cholesterol test, are often grouped together into one test panel called a blood panel or blood work. Blood tests are often used in health care to determine physiological and biochemical states, such as disease, mineral content, pharmaceutical drug effectiveness, and organ function. Typical clinical blood panels include a basic metabolic panel or a complete blood count. Blood tests are also used in drug tests to detect drug abuse.
A basic metabolic panel measures sodium, potassium, chloride, bicarbonate, blood urea nitrogen (BUN), magnesium, creatinine, glucose, and sometimes calcium. Tests that focus on cholesterol levels can determine LDL and HDL cholesterol levels, as well as triglyceride levels.
Some tests, such as those that measure glucose or a lipid profile, require fasting (or no food consumption) eight to twelve hours prior to the drawing of the blood sample.
For the majority of tests, blood is usually obtained from the patient's vein. Other specialized tests, such as the arterial blood gas test, require blood extracted from an artery. Blood gas analysis of arterial blood is primarily used to monitor carbon dioxide and oxygen levels related to pulmonary function, but is also used to measure blood pH and bicarbonate levels for certain metabolic conditions.[While the regular glucose test is taken at a certain point in time, the glucose tolerance test involves repeated testing to determine the rate at which glucose is processed by the body.
Laboratory Testing In Altadena, California
Our laboratory testing locations in Altadena, CA provide a wide range of certified laboratory test analysis. Some test results can be affected by certain foods and medications. For this reason, people may be asked to not eat or drink for several hours before a laboratory test or to delay taking medications until after the test.
Common Lab Tests Performed at our Altadena, California Testing Facilities Include:
- Complete Blood Count. This test, also known as a CBC, is the most common blood test performed.
- Prothrombin Time. Also known as PT and Pro Time, this test measures how long it takes blood to clot.
- Basic Metabolic Panel.
- Comprehensive Metabolic Panel.
- Lipid Panel.
- Liver Panel.
- Thyroid Stimulating Hormone.
- Hemoglobin A1C.
All laboratory testing that is performed on humans in the United States (except testing done in clinical trials and other types of human research) is regulated through the Clinical Laboratory Improvement Amendments (CLIA), which were passed by Congress in 1988. The CLIA laboratory certification program is administered by the Centers for Medicare & Medicaid Services (CMS) in conjunction with the FDA and the Centers for Disease Control and Prevention. CLIA ensures that laboratory staff are appropriately trained and supervised and that testing laboratories have quality control programs in place so that test results are accurate and reliable.
STD Testing Altadena, California
Our local Altadena, California STD testing centers provide multiple STD tests for individuals who may have been exposed to or showing symptoms of an STD. Millions of Americans have some form of an STD and our testing is provided in a confidential manner. STD tests may be ordered for one specific type of test or you may order a multiple panel test which includes several STD tests. STD stands for Sexually Transmitted Disease, also known as STI or Sexually Transmitted Infection, meaning that these diseases are most often, but not exclusively, spread by sexual intercourse.
STDs are passed from one person to another through sexual activity which can include vaginal intercourse, anal intercourse and/or anal intercourse. Though not as common, STDs can also be transmitted through intimate physical contact such as heavy petting.
STDs do not always cause symptoms, or they may only cause mild symptoms. This makes it very possible to have an infection and not know it. Therefore, if you are sexually active it is important to get tested at least once a year.
Handy Resources
Comprehensive Online Resources for Drug Testing
- National Institute on Drug Abuse (NIDA)
Provides comprehensive information on drug testing and its role in substance use disorder treatment.
- FDA: Drug Testing
Explains the FDA's role and regulations concerning drug testing for consumers.
- PDR.net
Provides detailed drug information and safety updates through a mobile-friendly platform.
- BeSafeRx - FDA
Resource by the FDA to help consumers identify and choose safe online pharmacies.
- SAMHSA: Drug Testing Resources for the Workplace
Resources and guidelines for drug testing in the workplace.
- Drugs.com
Provides drug information, side effects, and interactions for consumers and professionals.
- Drug Abuse Screening Test (DAST)
Online version of the DAST to help individuals assess whether they have a drug problem.
- Merck Manuals
Consumer-friendly medical resource providing comprehensive information on a wide array of health topics, including drug testing.
- SAMHSA Store
Provides access to resources and publications on substance use prevention and treatment.
- National Association of Boards of Pharmacy (NABP)
Information on state boards of pharmacy and regulations, including those related to drug testing.
- CDC: Workplace Health Promotion
CDC's resources on substance use and drug testing in the workplace.
- Mayo Clinic: Drug Testing
General information about the procedures and types of drug tests.
- MedlinePlus: Drug Testing
Offers information about various drug tests and their uses in medical diagnosis and treatment.
- University of Rochester Medical Center Health Encyclopedia
Provides a detailed entry on drug testing, including how tests are conducted and what they detect.
- World Health Organization (WHO)
International guidelines and information on public health, including substance abuse and drug testing.
- Healthline: Drug Testing
Consumer health site offering information on how drug tests work and what they look for.
- WebMD: Drug Testing
Provides a patient-oriented overview of drug testing and its purposes.
- National Center for Biotechnology Information (NCBI)
Provides a vast database of scientific studies, including research on drug testing and its effectiveness.
AI Overview
Laboratory Blood Testing: An Essential Overview
Laboratory blood testing is a fundamental tool in medical diagnostics, offering critical insights into the physiological and pathological conditions of the body. These tests are commonly used to evaluate health, diagnose diseases, and monitor medical treatments. This overview highlights the importance, common types of blood tests, and what individuals can expect during the testing process.
Importance of Blood Testing
Blood tests are vital for early detection and management of diseases. They help in assessing the functioning of various organs such as the liver, kidneys, and thyroid, and are essential in diagnosing conditions like diabetes, anemia, and heart disease. Regular blood testing can aid in the early detection of health issues, allowing for timely intervention.
Common Types of Blood Tests
- Complete Blood Count (CBC): Measures the levels of various blood cells like red blood cells, white blood cells, and platelets. This test is crucial for diagnosing conditions such as anemia and infections.
- Blood Chemistry Panels: Includes tests such as liver panels, kidney panels, and electrolyte testing which assess the functionality of these organs and electrolyte balance.
- Lipid Panel: Used to determine the levels of cholesterol and triglycerides in the blood, important for assessing heart disease risk.
- Blood Glucose Tests: Measures blood sugar levels to manage and diagnose diabetes.
- Coagulation Panel: Assesses blood clotting ability and can help diagnose clotting disorders or monitor blood thinning medications.
What to Expect During a Blood Test
- Preparation: Some tests require fasting or other specific conditions before sample collection. It's important to follow all preparatory instructions provided by the healthcare provider.
- Collection Process: A healthcare professional will draw blood, usually from a vein in the arm, using a small needle. The process is quick and causes minimal discomfort.
- Results: The time to receive test results can vary depending on the type of test. Results are typically available within a few days and will be discussed with the healthcare provider to interpret what they mean for the individual’s health.
Benefits of Regular Blood Testing
Regular blood testing provides numerous benefits:
- Health Monitoring: Helps track health changes over time, providing insights into how lifestyle, diet, and age affect body functions.
- Disease Management: Essential for managing chronic conditions, allowing adjustments in treatment plans based on test results.
- Preventive Care: Identifies risk factors early, enabling preventive measures to be taken before the onset of more serious conditions.
Laboratory blood testing is a key component in healthcare management, playing a crucial role in diagnosing, monitoring, and preventing diseases. Understanding the types and purposes of various blood tests can help individuals actively participate in their healthcare decisions.
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Local Area Info: Altadena, California
Altadena is an unincorporated area and census-designated place in Los Angeles County, California, United States, approximately 14 miles (23 km) from the downtown Los Angeles Civic Center, and directly north of the city of Pasadena, California. The population was 42,777 at the 2010 census, up from 42,610 at the 2000 census.
In the mid-1860s, Benjamin Eaton first developed water sources from the Arroyo Seco and Eaton Canyon to irrigate his vineyard near the edge of Eaton Canyon. This made possible the development of Altadena, Pasadena, and South Pasadena. He did the construction for B. D. Wilson and Dr. John Griffin, who jointly owned the Mexican land grant of Rancho San Pascual, about 14,000 acres (57 km2), that was the future sites of these three communities. They hoped to develop and sell this land in a real estate plan called the San Pasqual Plantation. Their efforts failed by 1870, despite Eaton's irrigation ditch that drew water from the site of present-day Jet Propulsion Laboratory in Arroyo Seco. They had failed because the land was relatively inaccessible and few believed crops could thrive that close to the mountains.
Eaton tried to sell the land for the partners, and in late 1873 he helped broker a deal with Daniel Berry, who represented a group of investors from Indiana, to buy 4,000 acres (16 km2) of the rancho. This included the land of present-day Altadena, but they developed a 2,500 acres (10 km2) section further south as Pasadena. In 1881, the land that would later become Altadena was sold to John and Fred Woodbury, brothers who launched the subdivision of Altadena in 1887. The land remained primarily agricultural, though several eastern millionaires built mansions along Mariposa Street, and a small community developed through the 1890s and into the next century.