how long does marijuana stay in your blood for

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Dr. James Burns answered:

Is it okay to smoke marihuana while being on a blood thinner?

Not a good idea

Blood
While there is no direct interaction between the active ingredient THC and what I assume you refer to as warfarin (blood thinner) the risk of injury and unintended bleeding increases with any substance that affects judgement, coordination, and balance which will happen with marijuana. So, No, I don't think it is OK, but that's just me.
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If I PASSIVELY smoked marihuana ca. 1 day before blood donation, could it be harmful for a patient who receives my blood?

Blood drive rules

Blood_donation
Restrictions regarding blood donations are in place for safety and many patients who use prescription drugs cannot donate. Recreational drugs actively present in body are an additional prohibition. Do not really know what you mean by passive smoking, unless you refer to someone else nearby and you merely encountered the fumes. Doubtful anyone would suffer from this.
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My friend is having a blood test. It checks for CBC, tsh and ft4. Will marihuana and alcohol show up in these test results?

NO

Cbc
The test you mention would not show drug or alcohol levels.
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Is it ok to smoke marijuana. Im on claravis/ isotreitnion, i dont want it to cause relapse. Due to the marihuana i kno alcohol, beer is a no no!

Not a good idea

155665043
Your acne meds can have brain and mood side effects as can pot. Drug interactions are not available to look up. Pot has 600-700 chemicals in it. Like alcohol, it is best not to mix them because there are too many unknown variables. Certainly there are other natural self-soothing activities you can rely on that are safe. Best wishes.
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Dr. Stuart Wasser answered:

How long would marihuana stay in your system?

See below

Marijuana
10-14 days after single use 45 days after heavy duty daily use (not including hair samples)
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How long does the marihuana in your system before being undetectable?

Days to weeks

Marijuana
THC will be present in fat and hair for a longer time than in blood or urine.
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How long does it take for marihuana to get out your system?

Days to weeks

Urine
THC will be present in fat and hair for a longer time than in blood or urine.
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How long does it take to get marihuana out of babys meconium?

months if ever

Marijuana
The meconium begins to form at 12 weeks and may carry traces of discarded debris for months. The higher the exposure the more likely the material would show up on the gas chromatograph used for testing.
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How long does it take to get a neg of marihuana in a drug test being a daily smoker for years?

Several months

Urine_drug_screen
And that's only if you stop and do not use it ever again. With daily use, urine will stay positive for at least 90 days. Hair will stay positive 90-120 days.
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Why is marihuana considered a lethal drug?

Politics

Cannabis
Marijuana is only considered a lethal drug by the U.S. Government. There is no scientific evidence of that (provided your only drug is marijuana). It is difficult to die from marijuana. However, alcohol which is a legal, "non-lethal" drug directly causes scores of deaths every year.
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