A blood test will only detect cannabis for the prior 2 or 3 days. Alot better than a urine test which can take a couple months.
killerweed420 Reviewed by killerweed420 on . Blood testing? Hey all. I'm an immigrant to the USA (been here approximately 6 years now), and I'm still in the process of finishing receiving approval to get a "Green card"; basically a document allowing me to work in the country, as well as granting me semi-permanent residency. One of the final stages is getting a federally approved physical checkup; basically they're going to check me for any diseases or nasty shit that they don't want immigrants bringing in to the country. However, I've heard rumors Rating: 5