--- title: "Quest Diagnostics Locations in O Fallon, MO | Vitals Vault" description: "Find 1 Quest Diagnostics locations in O Fallon, Missouri. Order Vitals Vault blood testing online from $99.00, then schedule your Quest blood draw in your dashboard. See hours and directions." canonical: "https://www.vitalsvault.com/locations/mo/o-fallon" last-updated: 2026-08-22 --- # Quest Diagnostics Locations in O Fallon, MO | Vitals Vault > Find 1 Quest Diagnostics locations in O Fallon, Missouri. Order Vitals Vault blood testing online from $99.00, then schedule your Quest blood draw in your dashboard. See hours and directions. [Missouri locations](https://www.vitalsvault.com/locations/mo) QUEST DIAGNOSTICS LOCATIONS # Lab locations in *O Fallon* Browse addresses, hours, and directions for Quest Diagnostics locations near O Fallon. Confirm current hours with Quest before visiting. **1**location ## No lab order yet? Order online and draw at the O Fallon location below. Popular tests like CMP and TSH cost up to 70% less than Quest's own online prices. Single tests from $9.99, full-body panels from $99. [Choose your panel](https://www.vitalsvault.com/checkout) - Quest Diagnostics ## 3449 Pheasant Meadow Dr, Ste 101 O Fallon, MO 63368View location ## Getting your blood drawn in O Fallon Quest Diagnostics lists 1 patient service center in O Fallon, Missouri, in ZIP code 63368. Vitals Vault members order their tests online and have the blood drawn at this site; Quest collects the sample and sends it to a Quest laboratory. Opening times on file run from 6:30 AM to 3:00 PM. The site is closed on Saturdays, so plan a weekday visit. ### Draw sites in O Fallon - [3449 Pheasant Meadow Dr, Ste 101](https://www.vitalsvault.com/locations/mo/o-fallon/3449-pheasant-meadow-dr-63368)3449 Pheasant Meadow Dr, Ste 101, O Fallon, MO 63368.Hours: Monday–Friday: 6:30 AM – 3:00 PM; Saturday–Sunday: Closed.Phone: 636-485-9450.Finding it: In Pheasant Point shopping center in front of YMCA. ### Before you go Fasting. Fasting depends on the tests in your order. Follow the preparation instructions provided for your panel, including how long to fast if required. During a required fast, Quest advises drinking only water. Ask your clinician about medications or supplements rather than changing them yourself. What to bring. Have your lab order or the electronic order details available, and bring photo identification. Keep your appointment confirmation handy if you booked ahead. Follow any additional instructions provided with your Vitals Vault order. ### Panels you can have drawn in O Fallon Any Vitals Vault order can be drawn in O Fallon. Essential covers 120+ lab tests for $99, Advanced covers 140+ lab tests for $199, and Max covers 160+ lab tests for $399. You can also build your own panel from single tests. A $19 lab visit fee applies to lab orders under $99, and it is shown at checkout before you pay. After checkout, choose a O Fallon site and a time in your dashboard. ### Other draw sites nearby If no O Fallon time works for you, the closest site outside the city is 17300 N Outer 40, Ste 104 in Chesterfield, 7.2 miles away from the nearest O Fallon site. These are the nearest draw sites by straight-line distance. - [17300 N Outer 40, Ste 104](https://www.vitalsvault.com/locations/mo/chesterfield/17300-n-outer-40-63005)Chesterfield, MO 63005, 7.2 miles away - [4101 Mexico Rd, Ste E](https://www.vitalsvault.com/locations/mo/saint-peters/4101-mexico-rd-63376)Saint Peters, MO 63376, 7.4 miles away - [1201 Wentzville Pkwy, Ste 117](https://www.vitalsvault.com/locations/mo/wentzville/1201-wentzville-pkwy-63385)Wentzville, MO 63385, 10.6 miles away - [15945 Clayton Rd, Ste 100](https://www.vitalsvault.com/locations/mo/ballwin/15945-clayton-rd-63011)Ballwin, MO 63011, 11.3 miles away - [11636 Administration Dr](https://www.vitalsvault.com/locations/mo/maryland-heights/11636-administration-dr-63146)Maryland Heights, MO 63146-3534, 14.9 miles away - [621 S New Ballas Rd, Suite 23](https://www.vitalsvault.com/locations/mo/saint-louis/621-s-new-ballas-rd-63141)Saint Louis, MO 63141, 15.2 miles away - [All Quest draw sites in Missouri](https://www.vitalsvault.com/locations/mo) ALREADY DECIDED? ## Pick a location after you sign up. You don’t need to choose now. Sign up first — once you’re a member, book an appointment or walk in at any partner location. [Choose your panel](https://www.vitalsvault.com/checkout?mode=build-your-own-panel) --- Canonical HTML: https://www.vitalsvault.com/locations/mo/o-fallon - [llms.txt](https://www.vitalsvault.com/llms.txt) - [sitemap.xml](https://www.vitalsvault.com/sitemap.xml) - [Developer portal](https://www.vitalsvault.com/developers)