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How long does primidone show up in a urine test?

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mitjason 26 Dec 2009

It depends on what type of UA. If they only check for PrimidoneUnchanged the half life 10 to 12 hours (Maximum of 24 hours in your Urine). For Primidone it's 29-36 hours (Maxium of 72 hours.) If they look for phenylethylmalonamide the half life is 75 to 126 hours (maximum of 252 hours.) I hope this helps. Happy Holidays!

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