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Hi.  I have a question regarding urinalysis.  I was told that there is a ua that can check what drugs have been used for up to three weeks previously.  I have looked all over the internet and couldn't find any info. on  test like that.  The only thing I can find info on that tests back that far is a test on a hair follicle.  Do you know if there is a ua that can go back three weeks and tell what drugs have been used in that time period?  Thank you, Lyn2w
May 7, 2014 by Lyn2w
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