Blood Drug Testing

What blood tests does marijuana show up?

I am planning on smoking this week, i havent smoke for a while so i dont know how long it stays in my system. I am going to be having surgery in about 3 weeks, and my doctor wants blood tests done and a urine sample in about 2 weeeks. Now, is there a certain test done to check for marijuana? Will it show up in my blood tests or urine sample?

Public Comments

1. Yes, it stays in your system for longer than you'll think.
2. You have to specifically test for THC. Normally this is not a test done before an operation. On a legal angle THC from weed accumulates in fatty tissue where it gets released over time after you stop smoking and can show up in drug tests for weeks, if not months.
3. THC stays in your system for 4 weeks. But doctors aren't allowed to test your samples for drugs unless you are applying for a job and if you sign papers allowing them to.