A member asked:

I urinated 30 minutes before giving a urine sample for std testing. does this reduce effectivness of amp test?

A doctor has provided 1 answer
Dr. James Lin answered

Possible...: How long should one wait to collect urine for testing STD? There is no firm set rule, but it is sensible to wait for 2-4 hairs at least so to let the std-related germs produce enough amount of their metabolic residual for testing; of course, make sure to collect the first (dirty) part of urine, not the midstream. That is why the first part of morning urine is the best specimen for testing STD.

Answered 6/21/2016

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