Toxicology Testing
Fast, accurate toxicology testing with in-house confirmations
MD Diagnostics provides both oral swab and urine toxicology testing with in-house confirmations on every presumptive positive test, so you can trust that results are fast, accurate, and defensible.
Partner with MD Diagnostics Order toxicology testingWhy providers and patients choose our toxicology testing service
The local lab advantage
As a family-owned, CLIA-certified lab in St. Louis, Missouri, MD Diagnostics combines national-quality testing with local service. Walk-ins are welcome, and clinics across the region rely on our fast turnaround times.
Testing made simple for individuals
Not every test comes through an employer or a doctor’s office. Sometimes you just need fast, confidential results. MD Diagnostics makes toxicology testing accessible with:
Walk-in availability — no appointment required at our St. Louis lab
Affordable cash pricing — straightforward, transparent options
Quick visits — most tests take just a few minutes to complete
Fast turnaround — results typically ready within 24–48 hours
Whether you’re testing for work, school, legal needs, or personal reasons, we make the process quick, private, and reliable.
Order toxicology testing Toxicology testing options
MD Diagnostics offers multiple testing methods to fit the needs of clinics, employers, schools, and recovery programs.
Whether you need quick detection, long-term monitoring, or a tamper-resistant collection process, our in-house lab provides reliable results with flexible options.
Oral swab testing (saliva)
Since 2016, MD Diagnostics has offered oral fluid toxicology testing as a non-invasive, easy-to-use option for clinics, schools, and employers.
Urine screening
Urine toxicology testing remains the most widely used and reliable method for drug detection. At MD Diagnostics, both presumptive screens and confirmations are completed in-house.
Hair follicle testing
While less common, we also provide hair follicle testing when a longer detection window is needed. This option can be particularly useful for employers or recovery programs monitoring long-term patterns of use.
Programs and clinics we serve
Pain management & recovery centers that require fast, defensible confirmations
More Info Toxicology testing FAQs
Urine tests detect a broad range of substances over a longer window, while oral swabs are non-invasive, harder to tamper with, and detect recent use within about three days.
Routine results are typically available within 24 to 48 hours.
Yes. MD Diagnostics performs in-house confirmation on every presumptive positive result to ensure accuracy and compliance.
You can visit MD Diagnostics at our St. Louis lab for walk-in or scheduled testing. We also provide shipping kits for clinics all across the Midwest, making it simple to get accurate results fast.
Ready to partner with a trusted toxicology lab for toxicology testing?
From in-house confirmations to customizable testing options, MD Diagnostics delivers the speed, reliability, and flexibility you deserve.
Partner with MD Diagnostics Order toxicology testing