A
female
 ,
anonymous
writes:heyy its my birthday in a week, and now since they lowered the age to give blood my mom wants me to give. I'm all for it, but the problem is around june i smoked some weed, i'm wondering how long i have to wait before i can give blood? and what should i say so that my parents dont find out?? will the test you or anything? all the help is appreciated thanks!
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female
reader, penta  +, writes (20 August 2007):
 Just donated platelets this weekend. There were no questions of any kind regarding marijuana use. (Lots on injection drugs, and whether I've been in prison, had sex with a homosexual man, whether I've lived in a country exposed to Mad Cow disease or HIV, or even if I'd had aspirin in the past 72 hours -- but NONE on marijuana.)
So I'm guessing it's not an issue.
A
female
reader, myp +, writes (14 August 2007):
 marijuana usually leaves ur system within 30 days on average, double check though, u should b ok if june was the last time but i highly suggest visiting the site Penta linked u toobest of luck-Myesha
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A
female
reader, penta +, writes (14 August 2007):
Here's the FAQ site: http://givelife.rso.wisc.edu/faq.htm and here's the Q & A:
Q: Can I give blood if I have been drinking or taking drugs?
A: Smoking marijuana or drinking alcohol moderately will not disqualify you from giving blood as long as you are feeling well. If you have EVER injected any illegal drugs, you can never give blood.
So donate with a clear conscience.
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A
male
reader, Jamer70  +, writes (14 August 2007):
 Well since it was around june you should be OK, though it does depend on your size and the amount you smoked, and if june was your last time.
Ask the nurse when you are giving blood, s/he would know best.
Though i found out the if smoked rarely it can take up to 90 days to exit your system fully, but 3-5 if smoked 3-5 times a week
And your parents wont find out as you have doctor/patient confidentiality
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A
female
reader, flower girl +, writes (14 August 2007):
 It depends on how much of it you smoke and how often, if you have only had it a few times it should be out of your system in ten days, if you smoke it regulary it can take up to 45 days to get out of your system.
It can also depend on your body weight as well.
Try google and check out the info on there.
Take care.xx.
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