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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Low Creatinine Levels In Marijuana User?

I am currently drug testing. I was smoking marijuana when I first tested and after I first tested I stopped. My first test was by hair all after that by urine. I receive all the findings by mail and was confused by the results. My THC(semiquantitative) goes up my creatinine levels go down as well as my specific gravity. If I stopped shouldn t the THC number go down??
Fri, 23 Sep 2022
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Anesthesiologist,  's  Response
Hello,

With single use of Marijuana, THC detection time is up to 3 days. With moderate use of Marijuana that means 4 times per week, the detection time is up to 5 days. In heavy or daily users it's up to 10 days and in chronic heavy users, it's up to 30 days. Causes of low creatinine levels are:
1) Very low muscle mass like in very old adults
2) Myasthenia gravis
3) Muscular dystrophy
4) Extreme weight loss

But low creatinine levels is mostly normal in your case and you don't need to be worried regarding that.

Take care. Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Pallavi M., Anesthesiologist
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What Causes Low Creatinine Levels In Marijuana User?

Hello, With single use of Marijuana, THC detection time is up to 3 days. With moderate use of Marijuana that means 4 times per week, the detection time is up to 5 days. In heavy or daily users it s up to 10 days and in chronic heavy users, it s up to 30 days. Causes of low creatinine levels are: 1) Very low muscle mass like in very old adults 2) Myasthenia gravis 3) Muscular dystrophy 4) Extreme weight loss But low creatinine levels is mostly normal in your case and you don t need to be worried regarding that. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Pallavi M., Anesthesiologist