Quest Diagnostics

Lab Testing at Quest Diagnostics - Covina East San Bernardino Road

Quest Diagnostics Patient Service Center in Covina, CA 91723.

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Popular tests at this location:

TSH Lipid Panel CBC A1C Testosterone Vitamin D CMP

Address

554 E San Bernardino Rd Ste 103
Covina, CA 91723
Los Angeles County

626-430-8943

Hours

Monday	7:30 AM – 3:00 PM
Tuesday	7:30 AM – 3:00 PM
Wednesday	7:30 AM – 3:00 PM
Thursday	7:30 AM – 3:00 PM
Friday	7:30 AM – 3:00 PM
Saturday	8:00 AM – 12:00 PM
Sunday	Closed

Nearby alternatives

LabCorp Covina
420 W Rowland St, Covina, CA 91723
1.3 mi
Quest Diagnostics - San Dimas West Covina Boulevard - Employer Drug Testing Not Offered
1330 W Covina Blvd Ste 205, San Dimas, CA 91773
2.7 mi
LabCorp San Dimas
1335 Cypress St Ste 101, San Dimas, CA 91773
2.7 mi
Quest Diagnostics - Glendora South Grand Avenue - Employer Drug Testing Not Offered
210 S Grand Ave Ste 124, Glendora, CA 91741
3 mi
LabCorp Glendora
210 S Grand Ave Ste 324, Glendora, CA 91741
3 mi

More lab options around Covina

All Covina lab locationsCompare draw centers in Covina, CA.LabCorp Covina420 W Rowland St, Covina, CA 91723

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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.