Ok, British hair testing is slightly different than here in the U.S. I am not sure about this at all, but I think they are allowed to go back up to 2 years in the U.K. Your head hair grows about 1/ 2 inch a month so in the U.K. that would be 12 inches of hair. They can test back that far here in the states but it becomes inaccurate after about 90 days (1 & 1/2 inches) so the standard is set to use up to 1 & 1/2 inches off the scalp. Also, I think the amount of metabolites allowed in the hair may be different. Any chance you know the name of the lab or who the big drug testing labs are over there?
FakeBoobsRule Reviewed by FakeBoobsRule on . Help please! how to pass hair strand test in 3-4 weeks I appeared in court today over children contact issues and have agreed to a hair strand test in a few weeks to demonstrate I am not an axe wielding maniac. I have smoked THC rich "Super Skunk" on and off until last night and it looks like abstaining for a while is my best option. ANyone know of a way to reduce whatever toxins have accumulated into my long hair over time? I gathered that shampoos won't do the trick but maybe there is something that can be done...thanks! Rating: 5