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Doctor insights on: Blood Drug Test Detection Times

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I smoke marijuna but I only hit it 4 times in the morning and night I didn't smoke Tuesday but got a blood drug test done Wednesday eveningevening...wi?

I smoke marijuna but I only hit it 4 times in the morning and night I didn't smoke Tuesday but got a blood drug test done Wednesday eveningevening...wi?

Will be positive: If you're a regular user, and it sounds like you are, THC will show up in a blood test for up to 3 days. Urine tests may be positive for the marijuanas metabolite THC-COOH for up to 30 days. Consider submitting another question to us: "What are the health effects of long term, regular marijuana use on my health? '" That's something else you need to know. ...Read more

Dr. Alan Wartenberg
585 Doctors shared insights

Drug Testing (Definition)

It is the process of examining body fluids or tissue for evidence of chemicals taken or not taken. It does not diagnose addiction however this a ...Read more


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Can a blood drug test determine how much of my. Kolonopin and Vyvanse (lisdexamfetamine) I've taken all month long or is there a.detection period? Why not do a urine test

Can a blood drug test determine how much of my. Kolonopin and Vyvanse (lisdexamfetamine) I've taken all month long or is there a.detection period? Why not do a urine test

Yes: If you are taking your medicine on a consistent basis, a Steady State Serum or Blood test should provide a pretty good indication of your adherence to directions. Urine Drug testing only gives a qualitative indication of your medication taking history-in other words-yes you are taking or no you're not taking it. The blood level is an instant snapshot of your blood level so it is difficult to fool. ...Read more

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When taking a blood drug test, does it detect drug usage for the past 3 months?

When taking a blood drug test, does it detect drug usage for the past 3 months?

It depends: It depends upon what is tested. As you probably know, some drugs are stored in fat cells in your body and can show up in your blood or urine for up to 30 days. There are also tests for metabolites of some drugs, which could be found in your blood for even longer periods of time. It would be unlikely for a blood test to detect drug usage when the last dose was > 30 days ago. ...Read more

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How to pass a blood drug test for shabu?

How to pass a blood drug test for shabu?

Don't use it: No more disrespect is intended than the question itself contains. "shabu" is, I understand, a term for methamphetamine used in japan, hong kong, malaysia and indonesia. If you are smart enough to be using healthtap, you are smart enough not to be messing around with this godawful drug of abuse. You won't realize the danger until it's too late. Stop, and get help if you need to. ...Read more

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Is there a drug test when donating blood?

Is there a drug test when donating blood?

No: Routine testing is for infectious diseases and metabolic functioning. ...Read more

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How long for a blood drug test result if positive?

How long for a blood drug test result if positive?

Depends on drug: Alcohol will disappear in a matter of hours, thc, cannabis, may be detectable for days. Urine tests last longer than blood tests and are usually used for drug screening and thc may remain positive for weeks. ...Read more

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I took a 30mg roxy how many hours will it be in my urine an blood I have a drug test on monday?

I took a 30mg roxy how many hours will it be in my urine an blood I have a drug test on monday?

A day: Roxicodone (oxycodone) has a half-life of approximately four hours. It will take at least 24 hours for it to be out of your system. This assumes you are able to metabolize it in the normal amount of time. Why are you taking this medication if you are concerned about drug tests. ...Read more

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If a person had smoked weed about two weeks and had to go take a blood drug test would they pass it?

If a person had smoked weed about two weeks and had to go take a blood drug test would they pass it?

Depends: The test result would depend on many factors including amount smoked, previous use, metabolism, body fat percentage. Probably will be positive. In general it's not a good idea to smoke weed, it's not healthy. Please consider not using it anymore. ...Read more

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I have to take a blood test tomorrow. Not a drug test, im afraid because I smoked about 3 1/2 weeks ago. Is my system clear?

YES/NO: I assume you mean by " smoking" that you smoked marijuana, it usually can be detected
up to 4 weeks after smoking, if they are testing for it, it may show in your system, though you are on the border for that. I suggest to stop smoking marijuana, as you may know it is associated with development of what is referred to as "amotivational syndrome" as well as increased risk for psychosis. ...Read more

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Why would the doctor request a blood drug test if he prescribes me narcotics?

Why would the doctor request a blood drug test if he prescribes me narcotics?

Protect you both: To see if you are in overall good health. By your consent and as a condition of treating you, to see if you may be using other Rx's. To see if your liver and kidneys can handle the medications safetly. ...Read more

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Can drug posetive menstrual blood effect a clean urine drug test?

Can drug posetive menstrual blood effect a clean urine drug test?

Probably: If there are drugs in the blood, they would probably also be found in the urine also, if the urine was tested. If the blood contaminated the urine, the drugs may be there, but this may not be needed.

If the drugs are "protein-bound", they may only be found in the blood at times.

Some drugs are best tested for in the urine, some in the blood. ...Read more

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Can a blood drug test tell the exact amount of my medication I've taken all month long or how far back can it detect? Why not do a urine test

Can a blood drug test tell the exact amount of my medication I've taken all month long or how far back can it detect? Why not do a urine test

Which drugs are: You referring to? If you can tell us specific drug being screened for - we can provide more information. ...Read more

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When urine and blood drug test are done together, will they also do DNA test?

When urine and blood drug test are done together, will they also do DNA test?

Legal question: The circumstances under which a dna test may be performed is a legal question with important possible implications. A physician who is not also an attorney licensed to practice in the state in question will not be qualified to give a proper answer. ...Read more

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Is there something I can take to pass a 12 panel blood and urine drug test. The only thing I have used is meth.

Is there something I can take to pass a 12 panel blood and urine drug test. The only thing I have used is meth.

Stop using meth: Nothing will work; online stuff's for suckers. The best thing that can happen to you is to acknowledge your meth use and get help. This stuff is treacherous and if you continue to treat this business lightly, you are likely to lose self-control and enter the downward spiral to death. I've autopsied folks like this and yes, they DO claw the flesh off their bodies as they are dying. Save your life. ...Read more

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Why would a narcotic drug test (both urine and blood) come back negative when the person is taking the prescribed narcotics?

See below: A common error occurs when a patient is prescribed an oxycodone preparation and they are tested for opioids only. The opioid test in urine will not test positive when a patient is on oxycodone or many other synthetics or semi-synthetic agents. ...Read more

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