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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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How long does Marijuana remain in the system for a blood test?

Answered by
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Dr. Raju A.T

General & Family Physician

Practicing since :2008

Answered : 4016 Questions

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Posted on Tue, 23 Aug 2016 in Lump
Question: I hope so. I was told earlier today that I need to have surgery on fri. minor operstion. I was just called and told that I need to be screened before the surgery. I have been smoking pot for the last few hours. will it show up in my tests?


do you know happen to know the answer?
doctor
Answered by Dr. Raju A.T 23 minutes later
Brief Answer:
No test will show

Detailed Answer:
Hi,

Thanks for your query.

Sorry for the delay in my response.

Amongst the test done for screening before surgery, none will show the presence of metabolites of cannabis in your blood.

Most of the tests concentrate on assessing bleeding time and clotting time of your blood. These are least affected by smoking pot.

Need not worry, drink ample amount of water which can help to wash out the metabolites from your system.

Hope, I answered your query.

Wish you good health.


Please do ask if any doubts.
If you are satisfied with the answer, please rate the same with five stars and close.

If in future you need to consult me, you can approach me directly through the below link.

http://doctor.healthcaremagic.com/doctors/dr-raju-a-t/60137


Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Raju A.T 13 minutes later
this is a pain management center. they do test on you before they will write you a script.
doctor
Answered by Dr. Raju A.T 9 minutes later
Brief Answer:
Yes, is specific screening

Detailed Answer:
Hi,

Thanks for writing back.

Usually general health screening tests will be performed before any surgery.

If they specifically perform screening test for cannabis, yes it will be shown.

The metabolites stay for many days in the urine and for a week in the blood since the time you smoke last.

This may not be considered a contraindication for surgery but if they consider any legal aspects or abide to protocols, I m afraid you may be questioned.

Hope, I answered your query.

Wish you good health.


Please do ask if any doubts.
If you are satisfied with the answer, please rate the same with five stars and close.

If in future you need to consult me, you can approach me directly through the below link.

http://doctor.healthcaremagic.com/doctors/dr-raju-a-t/60137



Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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