Quest Diagnostics

Lab Testing at Quest Diagnostics - Mercy Southfork

Quest Diagnostics Patient Service Center in Saint Louis, MO 63128.

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Popular tests at this location:

TSH Lipid Panel CBC A1C Testosterone Vitamin D CMP

Address

12700 Southfork Rd Ste 150
Saint Louis, MO 63128
St. Louis County

314-704-5144

Hours

Monday	6:00 AM – 5:00 PM
Tuesday	6:00 AM – 5:00 PM
Wednesday	6:00 AM – 5:00 PM
Thursday	6:00 AM – 5:00 PM
Friday	6:00 AM – 5:00 PM
Saturday	7:00 AM – 12:00 PM
Sunday	Closed

Nearby alternatives

Quest Diagnostics - Tesson Kennerly
9950 Kennerly Rd, Saint Louis, MO 63128
0.4 mi
LabCorp Saint Louis
28 Ronnies Plz, Saint Louis, MO 63126
1.9 mi
Quest Diagnostics - Arnold
12 Arnold Mall, Arnold, MO 63010
4.1 mi
Quest Diagnostics - Kirkwood - Employer Drug Testing Not Offered
461 S Kirkwood Rd, Kirkwood, MO 63122
5.2 mi
Quest Diagnostics - Mercy Watson Rd
7345 Watson Rd Lower Level Section 2, Saint Louis, MO 63119
6.2 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.