How long does weed stay in your blood?

[John Jones]

I donate blood and i will be doing it in 23 days and I still want to smoke. o and i dont want to be red flaged so i cant give again and i give to redcross.
o and 1 more thing i smoke 2 times a month or every other weekend and sometimes between
-Thx

 

[Hightide805]

Ive read anywhere from 1 month to 6 months...

here are some testimonials:
WikiAnswers - How long does marijuana stay in your system