Browse Substance & Toxicology Tests
Get insights about your health, on your terms. Shop for substance and toxicology lab tests – no doctor visit required for purchase. Test results can be used to determine substances used in at least the last 24 hours.
How questhealth.com works
Choose from a variety of test types that best suit your needs.
- In-person
- In-home sample collection
- Home collection kit
- At-home test
Buy a lab test
No doctor visit is required for purchase.
2Register your test
& schedule an appointment
Book a visit to one of 2000+ Quest locations.
3Visit Quest for sample collection
Complete your test sample collection during your scheduled appointment.
4Get fast results
Access results online as soon as they’re available. You will be emailed when they are ready. Discuss your results with an independent physician at no extra cost. Treatment options may be available.
Buy a lab test
+ in-home sample collection
No doctor visit required for purchase. If in-home service is available in your area, purchase for an additional $79 fee.
2Register your test
& schedule an appointment
After you make a purchase, register your test and Quest Mobile will contact you to schedule an in-home sample collection appointment.
3In-home sample collection
A Quest Mobile phlebotomist will collect your sample and deliver it to Quest Diagnostics.
4Get fast results
Access results online as soon as they’re available. You will be emailed when they are ready. Discuss your results with an independent physician at no extra cost. Treatment options may be available.
Buy a lab test
& activate your kit
No doctor visit required for purchase. Once your kit is delivered, activate it.
Activate your kit
2Collect your sample
& return it to Quest
No doctor visit is required for purchase. Once your kit is delivered, activate it.
3Get fast results
Access results online as soon as they’re available. You will be emailed when they are ready.
4Get physician support
Discuss your results with an independent physician at no extra cost.

Buy a lab test
No doctor visit required for purchase.

Collect your sample
Follow instructions to collect your sample.

Get fast results
View test results immediately at your home.
Take a test.
Get results.
Take action.
Confidentiality, clarity, medical oversight and speed are key to our process.

Check your email
We’ll email you when your physician-verified results are ready to view.
Access and view your results
Your email will include a link to your results.
Act on your results
You have the ability to speak to a PWNHealth physician to discuss the results.
Quest is working with PWNHealth LLC to provide independent physician services to you with Quest. PWNHealth services include physician oversight of all tests, including ordering tests, if appropriate, and evaluating results once available.
Buy your own Substance & Toxicology Tests
Once you purchase a test, schedule an appointment at a nearby Quest Diagnostics location. You’ll get fast and confidential results online with physician-guided insights for any next steps.
No Doctor Visit Required for Purchase
Your health is a journey; let Quest be your guide. Buy your own substance and toxicology tests online, anytime.
No doctor visit is required to buy your own lab test at questhealth.com. PWNHealth and its affiliates review your purchase to ensure it is medically appropriate before submitting the test order for processing. PWNHealth also reviews your test results and will contact you directly if they require prompt attention. As part of your purchase, you can discuss your test results with an independent physician; however you are also encouraged to speak with your primary healthcare provider.