Can Dextroamphetamine Shows Up In Your System As Methamphetamine?

Posted on Thu, 2 May 2019

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Thu, 2 May 2019 Answered on

Last reviewed on

Question : Can dextroamphetamine shows up in your system as methamphetamine?

Answered by Dr. Seikhoo Bishnoi (27 minutes later)

Brief Answer:
Yes it can.

Detailed Answer:
Hello thanks for using ask a doctor service

Yes Dextroamphetamine can result in positive tests for methamphetamines. This can result in positive amphetamine immune essay.

Thanks

Please let me know if you have some unclear doubts.

Above answer was peer-reviewed by : Dr. Vaishalee Punj

Follow up: Dr. Seikhoo Bishnoi (18 minutes later)

So with the GC/MS results, dextro-amphetamine could show up positive for d-methamphetamine?

Answered by Dr. Seikhoo Bishnoi (34 minutes later)

Brief Answer:
In GC/MS false positive results are rare.

Detailed Answer:
Hello again

GC/MS test or Gas Chromatography and Mass Spectroscopy test is a very specific test and has very high specificity. The chances that the test shows false positive result are rare. This test detects D-amphetamine and D-Methamphetamine specifically.

Thanks.

Please let me know if you have more doubts.

Above answer was peer-reviewed by : Dr. Vaishalee Punj

Follow up: Dr. Seikhoo Bishnoi (30 hours later)

Sorry.. but again, would dextroamphetamine shows up as d-methamphetamine in the GC-MS test? I am currently taking the prescribed medication for ADHD. I am testing posititive for d-methamphetamine so being accused of taking illegal drugs when I am not. I need a second opinion from a professional because my doctor has written me a note stating that it could possibly be tested positive for d-amphetamine and d-methamphetamine.

I really don't understand why these people accused me of taking illegal drugs when I have a doctor's note stating facts.

Answered by Dr. Seikhoo Bishnoi (10 hours later)

Brief Answer:
GC/MS is a confirmatory test.

Detailed Answer:
Hello again

GC/MS test is not used commonly for screening purposes. The test is a specific test. If you are on medical amphetamines and haven't taken d-meth then this could be due to false report. But I don't think the test will give false positive results. You can request for retest. Screening tests usually come false positive and detects only category of substance.

Thanks.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar