Quest Diagnostics

Lab Testing at Quest Diagnostics - Longview Delaware Street - Employer Drug Testing Not Offered

Quest Diagnostics Patient Service Center in Longview, WA 98632.

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Popular tests at this location:

TSH Lipid Panel CBC A1C Testosterone Vitamin D CMP

Address

1615 Delaware St
Longview, WA 98632
Cowlitz County

360-355-3103

Hours

Monday	6:30 AM – 5:30 PM
Tuesday	6:30 AM – 5:30 PM
Wednesday	6:30 AM – 5:30 PM
Thursday	6:30 AM – 5:30 PM
Friday	6:30 AM – 5:30 PM
Saturday	Closed
Sunday	Closed

Nearby alternatives

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Alliance Testing & Consulting
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Nw Testing Drug Screens & Physicals
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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.