Methamphetamine Urine Toxicology: An In-depth Review

can run a d,l-isomer test to try and narrow the source of the positive methamphetamine finding (Figure 1). The third and final test is the methamphetamine d,l-isomer test by MS (Figure 2). Based on a 1991 Department of Health and Human Services Technical Advisory, a d-methamphetamine level that is ................
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