Blood is normally drawn to check for diseases rather than drug metabolites. THC metabs are detectable in the blood for only 48 hours. Thats why urine is tested for drug metabolites, instead of blood.
Burnt Toast Reviewed by Burnt Toast on . how long does THC stay in your blood? have a test soon and i think it maye a blood one. I read in some places that it is as long as it stays in urine but in other places that it is much shorter. can anyone please tell me a definate answer? very worried. Rating: 5