Quest Diagnostics

Lab Testing at Quest Diagnostics - Alton

Quest Diagnostics Patient Service Center in Alton, IL 62002.

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Popular tests at this location:

TSH Lipid Panel CBC A1C Testosterone Vitamin D CMP

Address

237 E Center Dr Ste B
Alton, IL 62002
Madison County

618-465-5877

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	7:00 AM – 1:00 PM
Sunday	Closed

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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.