Yes.
all the way
a hair folocal test can go back up to 20 years
it depends on how often, how much you smoke, and if you cut your hair often. they make hair washes that make marijuana undetectable if you have the time/money to order some if needed
No you can not get HIV from braiding someones hair.
A routine blood test typically does not specifically screen for marijuana. To detect marijuana use, specific tests such as urine, saliva, or hair follicle tests are usually conducted. These tests can detect the presence of THC, the active compound in marijuana, in the body.
Hair sample drug testing can detect all of the major types of drugs, including marijuana, opiates, methamphetamines, PCP, ecstasy, and cocaine. Hair follicle drug testing can detect the trace amounts of illicit substances trapped in the cortex of the hair for up to 90 days after use. And even with shaven short hair, the hair can be extracted at the root (painful) for a test or your employer can decide not to hire you if you suddenly have no hair since the last time they talked to you.
The odor of marijuana is extremely potent and permeates the clothes, hair, and skin. The pupils and speech are also dead give-aways. If the officer suspects usage, he can order blood, urine, and hair tests.
No, a DNA swab is used to collect a person's genetic material for identification and cannot detect synthetic marijuana or any other drugs. Synthetic marijuana can be detected through urine, blood, or hair drug tests specifically designed to detect synthetic cannabinoids.
if you're talking about a hair strand drug test, my understanding is that marijuana can be detected in the strands of your hair for about a year.
From smoking it.
There is nothing you can do to get the drug metabolites out of your hair once it grows out other than cutting your hair, so if used in the last 3 months, is usually how long they go back for testing purposes.
No. Not unless you shaved yourself bald. Seriously. Once a chemical is locked into the keratin in your hair, it's there forever. Or at least until it's cut off. If a hair on your body can be found, that was growing there when you smoked marijuana, the hair drug test can detect marijuana use from it.