REUTERS/Phil NobleBlood
samples wait to be processed at Biobank, the world's largest blood and
urine sample freezer near Manchester, northern England, in this March
18, 2010 file picture. One of the reasons that drug tests are a colossal scam is that not all drugs stay in your system for the same amount of time. In fact, some of the least dangerous drugs such as marijuana can be detected in your urine, blood, and hair for much longer than harder drugs such as heroin and meth — meaning that schools, employers, and law enforcement agencies that drug test disproportionately penalize marijuana users.
ATTN: has previously reported on how workplace drug testing discriminates against marijuana users, but in order to illustrate just how disparate drugs interactions can be, here's a breakdown of how long each drug stays in your system.
1. ALCOHOL
An employee arranges bottles of whisky at a supermarket in Shanghai March 9, 2011.
Blood: 10 to 12 hours
Hair: Up to 90 days
2. AMPHETAMINES
An
image of a common prescription amphetamine salt formulation, Adderall,
with, along the bottom, the edge of a US dollar bill folded in half
(3.07 inches; 7.8 cm) for size comparison.
Blood: About 12 hours
Hair: Up to 90 days
3. BARBITURATES
4. CANNABIS
An unidentified man makes a cannabis cigarette at a house in London
Blood: About two weeks
Hair: Up to 90 days
5. COCAINE
An anti-narcotics worker carries a bag containing cocaine during a drug incineration in Lima September 12, 2013.
Blood: One to two days
Hair: Up to 90 days
6. HEROIN
Blood: Up to 12 hours
Hair: Up to 90 days
7. LSD
Urine: One to three days
Blood: Two to three hours
Hair: Up to three days
Blood: Two to three hours
Hair: Up to three days
8. MDMA
Blood: One to two days
Hair: Up to 90 days
9. METHAMPHETAMINE
Urine: Three to six days
Blood: 24 to 36 hours
Hair: Up to 90 days
Blood: 24 to 36 hours
Hair: Up to 90 days
10. MORPHINE
Urine: Two to three days
Blood: Six to eight hours
Hair: Up to 90 days
With the exception of benzodiazepines (e.g. Valium), marijuana has the longest detectability. If you smoke a joint, it can be traced in your urine for seven to 30 days, depending upon your frequency of use and body type. That contrasts starkly with the detectability of more dangerous and addictive drugs, including heroin, meth, and cocaine.
Blood: Six to eight hours
Hair: Up to 90 days
With the exception of benzodiazepines (e.g. Valium), marijuana has the longest detectability. If you smoke a joint, it can be traced in your urine for seven to 30 days, depending upon your frequency of use and body type. That contrasts starkly with the detectability of more dangerous and addictive drugs, including heroin, meth, and cocaine.
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