When taking the blood test for INH, is it possible to detect an increase in THC?

Question

I have been diagnose with latent tb and started taking and inh. I also have to take a monthly blood test to measure liver toxicity. I was wondering if the test could also detect THC increase since I had recently did some weed. Thank you.

Answer 1

Isoniazid, or INH, is known to occasionally cause hepatitis in those taking it.

http://en.wikipedia.org/wiki/Isoniazid#S...

So doctors often check liver enzymes like ALT and AST periodically when someone is on INH.  http://en.wikipedia.org/wiki/Liver_enzym...

As such, those tests will not pick up THC.  However, if someone runs a drug screen on the same blood, he/she will be able to detect THC.

So it depends on who is ordering the tests -- most doctors doing primary care won't bother ordering a drug test, but if you are receiving INH from, say, a correctional facility, they may very well do drug tests routinely.

Good luck.