Quest Diagnostics
Lab Testing at Lewis County Health Department - Questselect Members Only
QuestSelect / Members Only — access restricted in Monticello, MO 63457.
Restricted Access. Verify eligibility before visiting.
This is a QuestSelect program location. Walk-in access is restricted to QuestSelect members through participating employers or health plans. If you are not enrolled in QuestSelect, this location is unlikely to accept your lab order. We display this address for completeness. Please verify access by calling 573-767-5312 before visiting.
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101 State Highway AMonticello, MO 63457
Lewis County
Hours
| Monday | Closed |
| Tuesday | Closed |
| Wednesday | Closed |
| Thursday | Closed |
| Friday | Closed |
| Saturday | Closed |
| Sunday | Closed |
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About this location
QuestSelect / Members Only — access restricted. 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.