Quest Diagnostics

Lab Testing at Quest Diagnostics - West Covina - California Ave

Quest Diagnostics Patient Service Center in West Covina, CA 91790.

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Popular tests at this location:

TSH Lipid Panel CBC A1C Testosterone Vitamin D CMP

Address

553 S California Ave Ste A
West Covina, CA 91790
Los Angeles County

626-718-7660

Hours

Monday	7:00 AM – 4:00 PM
Tuesday	7:00 AM – 4:00 PM
Wednesday	7:00 AM – 4:00 PM
Thursday	7:00 AM – 4:00 PM
Friday	7:00 AM – 4:00 PM
Saturday	Closed
Sunday	Closed

Nearby alternatives

LabCorp West Covina
933 S Sunset Ave Suite 201, West Covina, CA 91790
0.9 mi
LabCorp Covina
420 W Rowland St, Covina, CA 91723
2.1 mi
Quest Diagnostics - Covina East San Bernardino Road
554 E San Bernardino Rd Ste 103, Covina, CA 91723
3.4 mi
Universal Industrial Care
16025 E Gale Avenue Ste B-10, Industry, CA 91745
4.3 mi
Quest Diagnostics - Hacienda Heights - Azusa Ave
1613 S Azusa Ave, Hacienda Heights, CA 91745
5.1 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.