Hair analysis for alcohol

Your hair is allowed from the scheduled examinationon ETG NOTbleached,colored or dyedbe. This means that with a three-month proof of abstinence from alcohol, your hair may not have been tinted, dyed or bleached for 3 months.

Hair is not substance-free immediately after the start of abstinence. In the growth phase (anagen phase), newly formed scalp hair reaches the surface of the scalp after about 9 - 14 days. For a proof of abstinence, this means that in the first month after the start of abstinence, aWaiting time of about 2 weeksmust be taken into accountuntil "substance-free" hair has grown back.