Hair folicle positive for meth, contamination is my only logic answer. What are contamination levels for meth in hair?

Positive is a positive. There is no wiggling out of this with excuses.

The entity that orders the tests sets the cut off levels for detection. Labs take great care not to have contamination, so forget that as a reason for failure. Maybe what you mean is incidental contact, or the most logical reason is for me is a court which has ZERO tolerance for detection levels, has failed you for a small detection(?).

Is this your first test? If within 90 days of your last use then there will be a detection. Courts provide and have you sign an agreement that lay out what they expect from you.

What's logical is they tested for more than meth, and found it, which is often the case with those who are court ordered to be tested.

Incidental contact would be a hell of a reach to make... because if you are subject to these tests you are prohibited from even associating or socializing with drug abusers. Which would be the wise approach to take even if you aren't peer pressure get s LOT of people in trouble and then there is the temptation aspect if you ever used before. Fact is fail is fail....there is no way to prove you didn't take it so it is assumed you did on a positive result because its an addiction that's hard to break. Its not like alcohol that incidental exposure is easy if you aren't taking the measures seriously and watching what products you use (which can result in a fail anyway as well).