For Anglophobes: day = day, hair = hair, blood = blood, Up to = until ...
So how long does each drug actually stay in your system for?
The most common types of drug tests will look for drug metabolites in the blood, urine, and hair, the latter of which can be contaminated with traces of drugs and blood washes over the follicle. So without further ado, here's how long some common illegal drugs remain detectable for: 1467821493-drug-test-urine-blood
Cannabis: 7 to 30 days in urine; 90 days in hair; 14 days in blood
Cocaine: 3 to 4 days in urine; 90 days in hair; a day or two in blood
Heroin: 3 to 4 days in urine; 90 days in hair; about half a day in blood
LSD: Up to 3 days in urine; 3 days in hair; less than five hours in blood
MDMA: 3 to 4 days in urine; 90 days in hair; a day or two in blood
Methamphetamine: 3 to 6 days in urine; 90 days in hair; up to three days in blood
I do not understand the limit 90 days in the hair ... I thought the hair was a permanent memory? A little like the circles of a tree ...