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Quest Diagnostics

Lab Testing at Fastest Labs Of Modesto

Quest partner location in Modesto, CA 95354.

Partner Location

This location is part of Quest's partner network. Services and availability may differ from a standard Quest Patient Service Center. Please call 209-200-8050 before visiting to confirm they accept your lab order.

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Note: tests available at this location depend on its services. Confirm by calling before visiting.

Address

400 12th St Ste 4
Modesto, CA 95354
Stanislaus County
209-200-8050

Hours

Monday9:00 AM – 6:30 PM
Tuesday9:00 AM – 6:30 PM
Wednesday9:00 AM – 6:30 PM
Thursday9:00 AM – 6:30 PM
Friday9:00 AM – 6:30 PM
SaturdayClosed
SundayClosed

Nearby alternatives

More lab options around Modesto

All Modesto lab locationsCompare draw centers in Modesto, CA.Lab testing in Modesto, CASee ordering basics and common tests for this area.LabCorp Modesto1101 Mchenry Ave, Modesto, CA 95350LabCorp Modesto1541 Florida Ave Ste 102, Modesto, CA 95350Quest Diagnostics - Modesto 6th Street1008 6th St Suite C, Modesto, CA 95354Quest Diagnostics - Modesto E Orangeburg Ave2222 E Orangeburg Ave Suite 104, Modesto, CA 95355Quest Diagnostics - Modesto Mchenry Avenue - Employer Drug Testing Not Offered1524 Mchenry Ave Ste 120, Modesto, CA 95350Quest Diagnostics - Modesto Pelandale Ave3525 Pelandale Ave, Modesto, CA 95356California Occupational Physician - Questselect Members Only1500 Florida Ave, Modesto, CA 95350
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About this location

Quest partner location. 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.