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No. A GCMS is a very highly accurate tool for determination of molecular mass. Since the molecular masses of benzodiazapines can vary greatly. For instance alprazolam (xanax) has a molecular mass of over 308 g/mol and diazepam (valium) has a molecular mass of just under 285 g/mol.
If you're being given one type of benzodiazepine legitimately, they CAN test to see if you've strayed from your prescribed treatment. The longer the half life of the drug, the longer they can test for it. "Xanax" can be tested for for several days while "Kolonopin" could probably be tested for for at least a week or more.

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15y ago

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