Quest Diagnostics

Lab Testing at Quest Diagnostics - Downey South Paramount - Employer Drug Testing Not Offered

Quest Diagnostics Patient Service Center in Downey, CA 90241.

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Popular tests at this location:

TSH Lipid Panel CBC A1C Testosterone Vitamin D CMP

Address

10800 Paramount Blvd Ste 103
Downey, CA 90241
Los Angeles County

562-299-8417

Hours

Monday	6:30 AM – 3:30 PM
Tuesday	6:30 AM – 3:30 PM
Wednesday	6:30 AM – 3:30 PM
Thursday	6:30 AM – 3:30 PM
Friday	6:30 AM – 3:30 PM
Saturday	Closed
Sunday	Closed

Nearby alternatives

LabCorp Downey
11480 Brookshire Ave Suite 104, Downey, CA 90241
0.7 mi
Quest Diagnostics - Downey Brookshire - Employer Drug Testing Not Offered
11525 Brookshire Ave Ste 401, Downey, CA 90241
0.7 mi
LabCorp Lynwood
4351 E Imperial Hwy, Lynwood, CA 90262
3 mi
Ross Health Care
2476 S Atlantic Blvd, Commerce, CA 90040
4.3 mi
Arcpoint Labs Of Santa Fe Springs
8620 Sorensen Ave Ste 4, Santa Fe Springs, CA 90670
4.4 mi

About this location

Quest Diagnostics Patient Service Center. Quest Diagnostics operates one of the largest networks of clinical laboratories in the United States, offering a wide range of diagnostic tests for patients, physicians, and employers.

Listing last updated 2026-04-25.