Urine Methamphetamine Testing
Amphetamines are one of the "SAMHSA-5". The five drugs tested for in
the standard NIDA approved drug test. Amphetamines are typically
detectable in urine for 1-3 days after use. Methamphetamines stay in
the system slightly longer, 3-5 days.
Test Information
The Amphetamine test (used for meth testing) is a one step competitive immunoassay that is
used to screen for the presence of amphetamine in urine. It is a
chromatographic absorbent device in which drug or drug metabolites in
a sample compete with drug conjugate immobilized on a porous membrane
for a limited number of binding sites. This test is a rapid,
qualitative immunoassay for the detection of amphetamine in urine. The
cutoff concentration for this test is 1000 ng/ml, as recommended by
the Substance Abuse and Mental Health Services Administration and
NIDA." The cutoff for GC-MS, which detects d-amphetamine and
methamphetamine, is 500 ng/ml. Methamphetamine Hair Testing
Methamphetamine is detectable with hair tests and is included in the
standard set of substances tested for with these tests. Hair tests
generally take the most recent 1.5 inches of growth and use those for
testing. That provides a detection period of approximately 90 days. If
an individual's hair is shorter than 1.5 inches, this detection period
will be shorter.
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Blood Testing for Methamphetamines
Methamphetamine is detectable in blood for 1-3 days. Levels over 100
ng/ml are considered consistent with abuse.