Can these named above cause a drug urinalysis to test positive for Amphetamines? For Methamphetamine?
can L-Phenylalanine,L-Tourine,L-Tyrosine or L-Glycine cause a false pos in a urinalysis for Methamph
- Posted:
- 13 Aug 2009 by beckyjoh
- Topics:
- amphetamine, glycine, methamphetamine
Details:
Added 13 Aug 2009:
The urinalysis was tested for amphetamines, marijuana, and benzo.The test showed a positive for amphetamines then got sent to lab for a more detailed test and showed high numbers for methamphetamine, can the combo of one or all in the question title shown above show the positive outcome or a "false" positive?
Responses (1)
robo15 Aug 2009
No.
Here is some information on substances that can cause false positive results for amphetamines or methamphetamine.
"... Methamphetamine is present in two different forms; “d” and “l”. Street
methamphetamine is predominantly d -Methamphetamine. The over-the-counter
medication, Vick’s Inhaler (and the Walgreen equivalent), contains exclusively the
“l” form of methamphetamine (the listed active ingredient is l-Desoxyephedrine,
another name for l -Methamphetamine). Although it is uncommon, the heavy use of
Vick’s Inhaler can cause a positive urine test for methamphetamine. The claim that
Vick’s Inhaler is the source of a positive methamphetamine test can be checked by
testing for “d” versus “l” methamphetamine. This test is performed by GC/MS.
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