Okay so I did coke about 35 days ago and now I found out I have a hair test Monday. Ive cut all my hair three times since then including body hair. Right now my hair is about 1/2 an inch long on my hea but I keep my entire body trimmed. What are my chances of passing.

Prior to the usage 35 ago how often did you use?

I hadn't used in over 2 years

Cocaine has the highest and most rapid incorporation rate of any drug into hair. It must be assumed that some level of incorporation occurred. That in itself is unusual because with most drugs one time use isn't detected in hair.

One time use can have two results; 1) that the amount was insufficient to attach to hair and 2) that the amount was insufficient to rise above the test cutoff value.

There is no way to predict the result of trimming your hair due to individual growth rate which can vary from .5 to 3.0 cm/mo.

With cocaine your ethnicity and hair color are also influential. Given the same dosage, a blond or red head caucasian is far less likely to test positive than one of African or Asian ethnicity.

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Originally Posted by DrBill100

Cocaine has the highest and most rapid incorporation rate of any drug into hair. It must be assumed that some level of incorporation occurred. That in itself is unusual because with most drugs one time use isn't detected in hair.

One time use can have two results; 1) that the amount was insufficient to attach to hair and 2) that the amount was insufficient to rise above the test cutoff value.

There is no way to predict the result of trimming your hair due to individual growth rate which can vary from .5 to 3.0 cm/mo.

With cocaine your ethnicity and hair color are also influential. Given the same dosage, a blond or red head caucasian is far less likely to test positive than one of African or Asian ethnicity.

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Okay well like I've said I've used my clippers at a 1 every time. But for more info I have black hair pretty thick and I am Mexican. And my hair grows pretty fast I did buy some shampoo that is said to work but I am debating on weather to use it or not. What d
O u think my chance are

Mexican and black hair are not in your favor with this drug and hair testing.

It's impossible to say. I would guess that the drug is present in the hair but one time use may not be enough to be detected. Also this drug binds to melanin (the color factor) and moves with the growth of the hair. Therefore if it was beyond the point where you cut it is also gone.

Cocaine, in low or single dose is tough to figure.