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Dr. Thomas, MD
Dr. Thomas, MD, Board Certified Physician
Category: Medical
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Experience:  Internal Medicine--practice all of internal medicine, all ages, family, also Integrative, CAM, etc
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Hair analysis drug test results show positive 1.9 pg/10 mg

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Hair analysis drug test results show positive 1.9 pg/10 mg for Carboxy THC. 90 day period. is that considered high? frequent/infrequent usage? how can you tell during the days when usage occurred?
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DrThomasMd :

Hello

JACUSTOMER-u98b3gqn- :

hi

DrThomasMd :

This basically means it is a positive test and the amounts exceeded the threshold so it is detectable. 1.9 is simply over that threshold. You can not tell when the drug was smoked except that it was within the last 90 days. You can not really tell if how frequently, however, positive tests show up more in steady users. Less in one time users, about 90 versus 50 % test positive.

DrThomasMd :

That's about it.

DrThomasMd :

It is a qualitative not a quantitative test.

DrThomasMd :

dt

JACUSTOMER-u98b3gqn- :

ok so if they say they can do an analysis to see when during the 90 days it was smoked or whatever, they really can't tell that?

DrThomasMd :

They can not tell when, only that it was within the last 90 days.

JACUSTOMER-u98b3gqn- :

so is 1.9 alot - meaning everyday smoking or is it more like once a week - trying to figure if that is a high concentration. or can you not tell. the threshold was 0.5 pg/10mg

DrThomasMd :

No it can not be used that way, as i said. it only shows you have smoked some amount within the last 3 months, not how often, not how much...OK?

DrThomasMd :

It would be more likely....

JACUSTOMER-u98b3gqn- :

got it. thanks.

DrThomasMd :

That this is chronic use but you can't say for sure

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