29th January 2014
Why has Somnath Bharti not apologised to the Ugandan women who tested negative to his FORCED urine test?
Ashwin Mahesh wrote on FB:
The most damaging aspect of the 'forced drug tests' in the Bharti case is that the women tested negative. At that point, the only possible thing left to say is 'sorry'.
That these women tested negative was made clear the next day in newspaper reports.
Unfortunately, there are comments being made on FB that blood tests were needed, not urine test. That is INCORRECT.
Evidence suggests that blood tests are far LESS reliable than urine tests.
Because marijuana stays in the bloodstream for a short time, blood tests for marijuana are usually not used, except in the case of automobile accidents and some roadside sobriety check points. Blood or saliva tests can show current intoxication. However, unlike blood alcohol concentration tests, they do not indicate a level of intoxication or impairment.
On the other hand, urine tests for marijuana metabolites can only show recent marijuana use, not intoxication or impairment, because of the time required between smoking and the metabolites being eliminated in the urine. However, because many employers have a zero tolerance for drug use, most workplaces use urine tests for any recent use of drugs. Most researchers agree that urine tests for marijuana can detect the presence of the drug in the body for up to 13 days.
The basic drug test types and their approximate detection times are shown in the table below.
Marijuana – Single Use
(0 -24 hours?)
Marijuana – Regular Use
The most popular kind of drug test is the urine test, which can detect marijuana for days or weeks after use. Note that urine tests do not detect the psychoactive component in marijuana, THC (delta-9-tetrahydrocannabinol), and therefore in no way measure impairment; rather, they detect the non-psychoactive marijuana metabolite THC-COOH, which can linger in the body for days and weeks with no impairing effects. Because of THC-COOH's unusually long elimination time, urine tests are more sensitive to marijuana than other commonly used drugs. According to a survey by Quest Diagnostics, 50% of all drug test positives are for marijuana.
The detection times in urine are significantly greater than detection times in blood,
Happy to be corrected by any expert.