![]() Many patients taking amphetamines for attention or hyperactivity disorders take a break from their medication on weekends, holidays, or other times when their symptoms are not as disruptive (time away from school or work). When was the patient’s last dose? Was the sample collected after a “drug holiday”? Providers wishing to assess compliance of methylphenidate medications (i.e., Daytrana®, Ritalin®, Quillivant XR®, Metadate ER®, Aptensio XR®, Cotempla XR-ODT®, QuilliChew ER®, Concerta®, Methylin®, Ritalin LA®, Focalin®, Focalin XR®) may consider adding this test which is available in both urine and oral fluid.Įxample of unexpected negative amphetamine result in patient actually prescribed methylphenidate (Methylphenidate testing was added for the sample after consultation with Aegis Clinical Team): Methylphenidate is structurally distinct from amphetamine, and undergoes a separate testing process at Aegis. However, a common misconception is that methylphenidate products are also included in this testing. The pharmaceutical amphetamine products mentioned above are detected as amphetamines on Aegis testing. What medication is the patient prescribed? ![]() In the case of unexpected negative amphetamine results, there are several points to consider:Įxample of Unexpected Negative Amphetamine Result: 1Įxample of Expected Positive Amphetamine Result:Įxample of Unexpected Positive Amphetamine Result: Amphetamine is also a metabolite of methamphetamine, but in the case of methamphetamine exposure, methamphetamine is typically also present.Pharmaceutical amphetamine products such as Adderall®, Adderall XR®, Vyvanse®, Dexedrine®, Evekeo®, Adzenys XR®, Dynavel XR®, Mydayis® or the generic equivalents of these products.In the case of unexpected positive amphetamine results, consider the following drug exposures: Results of drug testing may be unexpectedly negative or positive. The information provided here is intended to assist providers with deciphering amphetamine results from Aegis, which have undergone definitive testing by liquid chromatography / tandem mass spectrometry prior to reporting. definitive testing methods, and may differ among laboratories. Please note that the interpretation of amphetamine assays differs when using presumptive vs. When reviewing unexpected drug testing results, many providers question, “What did my patient actually take?” In this month’s clinical update, we examine the interpretation of amphetamine results from Aegis Sciences Corporation. What Did My Patient Actually Take? An Overview of Amphetamine Results Tuesday, June 11, 2019
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