i use to take pre workout all the time before starting tpapn but stopped because i am paranoid about false positives. does anyone know if any of the ingredients in pre workout such as beta alanine can cause false positives? I'm assuming anything ending in -ephedrine and extract is off limits
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i use to take pre workout all the time before starting tpapn but stopped because i am paranoid about false positives. does anyone know if any of the ingredients in pre workout such as beta alanine can cause false positives? I'm assuming anything ending in -ephedrine and extract is off limits