Marijuana Cannabis (Weed) Drug Test
Marijuana Cannabis (Weed) Drug Test can be requested without a referral, and this overview covers what to expect. A marijuana (cannabis) drug test checks for evidence of recent cannabis use. It is ordered when a person needs screening for medical, legal, or workplace reasons, or when a clinician is evaluating symptoms that may relate to cannabis.
- Sample type
- blood
- Category
- Drug & Urine Screening
- Turnaround
- 1-3 business days
- Price
- $199
- Referral
- Not required
A marijuana (cannabis) drug test checks for evidence of recent cannabis use. It is ordered when a person needs screening for medical, legal, or workplace reasons, or when a clinician is evaluating symptoms that may relate to cannabis.
What it measures
- THC (tetrahydrocannabinol) — The main psychoactive substance in cannabis; its presence suggests recent use.
- THC-COOH (carboxy-THC) — A breakdown product of THC that stays in the body longer and is often the target of testing.
- 11-OH-THC — Another THC breakdown product that can appear shortly after use.
Who it is for
Employers, legal authorities, or clinicians may order this test. It is not a routine medical test and is typically done only when there is a specific reason.
Preparation
No fasting or special preparation is needed. Tell the person drawing your blood about any prescription or over-the-counter drugs you take, as some can affect the result.
Results and what they mean
Results are usually reported as positive (cannabis compounds detected) or negative (not detected), sometimes with a numerical level. A positive result does not by itself mean impairment or a diagnosis; only a qualified clinician can interpret the findings in context. This information is general and not medical advice.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the marijuana cannabis (weed) drug test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
How long does cannabis stay detectable in blood?
Detection time varies widely based on how often and how much a person uses, as well as individual body factors. Blood tests generally detect recent use better than long-term past use.
Can secondhand smoke cause a positive result?
Secondhand exposure is unlikely to cause a positive result on a standard blood test, but very heavy exposure in an enclosed space could potentially lead to a low-level detection.
Is this test confidential?
Yes, your test results are private and protected by law. They are shared only with those you authorize or as required by law.
What should I do if my result is positive?
Discuss the result with your healthcare provider. They can help you understand what it means for your health and any next steps.