Test results may vary depending on your age, gender, health history, and other things.
Your test results may be different depending on the lab used. They may not mean you
a problem. Ask your healthcare provider what your test results mean for you.
A positive result can mean recent
and past marijuana use. The urine marijuana test will be positive if the amount of
in the sample is more than 50 nanograms per milliliter (ng/mL). If you use marijuana
your test is negative, it could be because your THC levels are below this level. A
confirmation test can be done by a more sensitive method if the screening test is
positive. Confirmation tests are done to be certain that the original test result
true result. It is done to make sure the result was not caused by a medicine or other
substance affecting the test.
Urine tests can't show the exact
day or hour that marijuana was last used. This is because THC can stay in your system
even after you've stopped using marijuana. THC can linger on average up to 10 days
casual user. It stays in your system for 2 to 4 weeks if you use marijuana often,
more than a month if you use it more often.