A member asked:

How long does it take pregnyl to leave your system? if i received the shot 13 days ago and got a ppt, could the pregnyl still be affecting it?

3 doctors weighed in across 2 answers
Dr. Gerard Honore answered

Specializes in Fertility Medicine

Doubt it: Doubt it very much; injected HCG is usually no longer detectable after more than 10 days.

Answered 4/17/2015

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About 10 days: The average is about ten days, though some women can metabolize it more slowly. Contact your fertility doc and ask for a quantitative HCG blood test. I'll keep my fingers crossed!

Answered 9/28/2016

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