A member asked:

When pregnant, how long does it take to get thc and methamphetamine out of your system urine and blood?

2 doctors weighed in across 2 answers

A very short time: for methamphetamine to be metabolized into inactive chemicals (about 4-6 hours) and even shorter for delta-9-THC, which is in blood for perhaps 1-2 hours and is then metabolized. It is the active drug that can cause harm in pregnancy, and if it were a single use, this is not likely to be a problem. The metabolites however can be detected in urine for 3-5 days, longer for THC if smoked regularly.

Answered 5/8/2021

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Dr. Linda Callaghan answered

Specializes in Addiction Medicine

Varies.: The length of time these drugs stay in your system depends on the amount and the length of time you were taking them. THC can stay up to 30 days and Methamphetamine's half life is between 10 to 20 hours depending on your urine PH.

Answered 10/12/2017

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