Can marijuana show up on a blood test?

Answer 1

Yes it will. Although you are not smoking it yourself the smoke from the person standing next to you or their second hand smoke could still enter your blood steam, which when you take a blood test will show up positive for smoking.

Answer 2

Not necessarily. It's the signs that clinicians will pick up on. Odour, cough and nicotine stains on fingers (sometimes teeth). If carboxyhaemoglobin can be picked up, this will be a major indicator. Smoking affects many other blood tests in various ways, but do not directly measure whether someone is a smoker or not.

Answer 3

Definitely. Cotinine levels are measured in the blood to test for nicotine - cotinine is formed when nicotine passes throught eh liver. And cannabinols are easily detectable in the blood of someone has been smoking. In fact, as cannibinols dissolve in fatty tissue, it will remain in the blood for quite sometime after you have had a joint, unlike heroine for example which is gone after about 24 hours. So, I recommend if you want to get high a few days before a drug test, use smack and not skunk.

Answer 4

No, it could not show up in a blood test. Sometimes certain other medications and/or supplements could cause a false positive, such as ibuprofen. You would always need to be upfront and honest with the tester about everything you are taking. Marijuana can show up on a blood test much longer than an urinalysis.

Answer 5

Yes it can. and usually for up to 2 weeks depending on other factors. Such as weight and amount used.

Answer 6

If they are testing for nicotine, yes.

Answer 7

No