The concentration of THC in urine can vary widely depending on factors like the frequency of use and the time since last consumption. Generally, for occasional users, THC levels may range from 20 to 100 ng/mL, while chronic users can have levels exceeding 1,000 ng/mL. In some cases, levels can be even higher, especially shortly after use. It's important to note that different drug tests may have varying cutoff levels for detecting THC.
THC on average will have greater than 50ng/ml potency in your urine for up to 3 months.
50 nanograms of THC metabolites per milliliter defines a "presumptive positive" by NIDA (National Institute on Drug Abuse) certified labs. So, to pass the test, you don't need to have absolutely clean urine - you need to have less than 50 ng/ml of THC in your urine. Found this information here: http://best4drugtest.com/_passthctest.html
The allowable limit of THC in urine varies by organization or jurisdiction. In general, the threshold for a positive drug test for THC in urine is typically set at 50 nanograms per milliliter (ng/mL) for most standard drug tests. However, some organizations or specific tests may have different cutoff levels.
Specific gravity.
Nearly 1200-1500mL urine is excreted per day.
It is supposed to be 50 nanograms per ml in a standard test
It means you smoke a LOT of weed. Getting a result in nanograms per milliliter means they put your urine in a testing machine. First they put the urine in an EMIT or ELISA system. This tech just looks for cannabinoid metabolites in your urine, so 517ng/ml means you smoke quite a bit of pot--the machine won't even show you as positive until you break 50ng/ml, so you're ten times the minimum. The next test if you flunk EMIT is GC/MS. This machine can segregate metabolites, so they look for one specific one--the metabolite for delta-9-THC. Therefore, the cutoff is quite a bit lower--if you've got more than 15ng/ml of delta-9-THC in your sample you fail. If you have 517ng/ml of delta-9-THC in your sample marijuana isn't your problem; dying from smoke inhalation is.
The bladder's capacity of storing urine is about 500ml. In intake and output , we should at least have 30 ml of urine per hour.
100ml
80 nanogram THC metabolites (for example) in 1 milligram urine (for examp.) 1 milligram = 1 000 000 nanograms btw THC cut off level its 50 ng/ml or less
Concentration of drug metabolites. For example THC (marijuana metabolites) cutoff limit for home drug test is normally 50ng/ml ....mean .. 50 nanograms of THC metabolites per milliliter urine. Also 1kg = 1000 grams ( 1kg=2.2046 lbs ) 1 gram = one billion (1,000,000,000) nanograms. 1l= 1000 ml (1l=33.8140226 fluid ounces )
In the standard cutoff threshold of 50 ng/ml (the standard in most government-required testing programs), THC is found in the urine up to two days after smoking just one cigarette.