D L Methamphetamine Interpretation.
Methamphetamine comes in two isomers. One isomer called Dextro, or D Methamphetamine, is active as a central nervous system stimulant and it is a DEA Schedule 2 controlled drug commonly called “Meth” or “Speed”. Desoxyn, a prescription drug also contains D Methamphetamine.
The other isomer, Levo, or L Methamphetamine is not a DEA controlled drug. It is found in an over the counter medicine called “Vicks Inhaler” or as the prescription drug, Selegiline. In addition to some medications, L Methamphetamine can be produced in the illegal production of street Methamphetamine. For this reason federal drug testing policies have determined that urine containing 20% or more D Methamphetamine is consistent with exposure to the DEA Schedule 2 version of Methamphetamine- D Methamphetamine.
Standard GCMS confirmations do not distinguish between these two forms of Methamphetamine. This DL Methamphetamine isomer test provides specific information regarding the % of D Methamphetamine in the specimen by separating and measuring both the L and D versions of Methamphetamine. Results are reported as the %D found in the specimen. A 0% D result means that the sample was 100% L Methamphetamine. A 20% D Methamphetamine result means that the sample had 80% L Methamphetamine.