A 25-year-old female asked:
how can meth show up in my hair if i javent done it since 2012 and i only been on codine and hydrocodone?
2 doctor answers

Dr. Dariush Saghafi answered
33 years experience Neurology
Been to any parties?: When's the last time you went out to a party where people were smokin' it and you were there inhaling it for a period of time?
Let me play Carnak the Great--- At least 10 days ago but no more than 90 days ago? Am I right, close? And if you've attended any meth parties in the past 7-9 days it'll take another 10 days for that to grow out.
Answered on Sep 9, 2014

Dr. Nadine Yamusah answered
Specializes in Internal Medicine
Tree rings: Depending on the person, hair grows about 1/2 in per month and continues growing for about 5 years unless disrupted by nutritional or hormonal imbalances etc. hence chemicals will be seen in your hair shafts/ follicle for as long as 5 years and some people 7-8 years as long as the hairs have not fallen out prematurely and gone through the last phase of t.he hair cycle
Answered on Apr 4, 2016
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