a strand test is carried out after applying colour to a hair. You remove the colour of a strand of the hair to check if you have the desired result (colour)
A strand test is done to see how strong the hair is, and if the hair will break off or is brittle. - Olivia K R
If you are getting a drug test via hair strand test and you have done something you shouldn't have since the last time you shaved your head, your busted. Your hair is the history of your drug use. In other words, if you have done Ritalin since the last time you cut your hair, considering you shave it bald, it will show up.
A strand test is done during the coloring process by removing some of the color from a small section of hair in order to check it. A dry towel is used to remove the color and if the hair is not at the desired level, the color is reapplied onto the strand used for the test.
It depends whether they are testing hair from the head or hair for the body. Normally it is 90 days (with a standard test) but it can be up to a year if they test body hair. Check out the link I added for detailed information.
Actually, it stays in the hair for as long as six months so that if someone took heroin in the last six months, it may well show.
yes, hair detects a history of your drug usage.
how long does it take for heroine to be negative in a hair strand test
no
It's extremely unlikely, the hair test is 99.95% accurate.
Yes they can if a strand test is done.
cheat ? you can remove all metabolites from your hair with hair razor before you take a test and pass .. i wouldn't say that s cheating.