Confidential lab testing · No referral required United States · 15,280 communities

Lab test

Marijuana Cannabis (Weed) Drug Test

Marijuana Cannabis (Weed) Drug Test can be ordered without a referral, and this guide covers what to expect. The Marijuana Cannabis Drug Test screens for the presence of cannabinoids in the body. It is commonly used to detect recent marijuana use.

Sample typeBlood draw at a collection lab
ReferralNo referral required

What this test is

This test detects cannabinoids, which are compounds found in marijuana. It helps determine recent cannabis use by identifying these substances in the body. The test is often used in various settings, including employment and clinical evaluations.

What it measures

  • THC — reflects recent marijuana use
  • THC-COOH — indicates marijuana metabolite presence
  • Cannabidiol (CBD) — non-psychoactive compound presence
  • Cannabinol (CBN) — degradation product of THC

What the test involves

The test typically involves a urine sample, though sometimes a blood sample may be collected. The sample is analyzed in a laboratory to detect the presence of cannabinoids.

Why it is often ordered

Clinicians may order this test to evaluate recent marijuana use. It is also used in contexts such as employment screening or legal investigations.

Preparation

Preparation instructions should be followed as provided by the collection lab. Always check with the lab for specific guidelines before the test.

How results are reported

Results indicate whether cannabinoids are present in the sample. Reference ranges and thresholds for detection can vary between laboratories.

Before you go

  • Sample type required
  • Collection procedure
  • Turnaround time

FAQ

Frequently asked questions

How long can marijuana be detected in the body?

Detection times vary based on usage frequency and individual metabolism. It can be detected for days to weeks after use, depending on the test type.

Can secondhand smoke cause a positive test result?

While unlikely, extreme exposure to secondhand smoke in a poorly ventilated space might lead to a positive result. However, this is rare.

Will CBD products affect the test results?

Some CBD products may contain trace amounts of THC, which could potentially lead to a positive result. It is important to verify product contents.

What should I do if I receive a positive test result?

Discuss the results with a healthcare provider to understand the implications. They can provide guidance on next steps and any necessary follow-up.

Related

Related tests

Locations

Request Marijuana Cannabis (Weed) Drug Test by state

Choose a state for local context.

Browse all states