Want to know how? Well, I’ll give you three options, but first, bear in mind that certain factors will directly influence these methods. It’s simple! All you have to do is lower the concentration of benzoylecgonine below the cut-off level. This means that if the concentration of benzoylecgonine, one of the main metabolites of cocaine, is below that level, hurray, you will pass! These are the preferred initial screening drug tests commonly ordered for detecting cocaine metabolites. The cutoff value for cocaine is 300ng/ml for an immunoassay test.
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