@article{ref1,
title="Analytical confirmation of error in false positive amphetamine immunoassays and results",
journal="Archiv für Kriminologie",
year="1998",
author="Schutz, H. and Erdmann, F. and Magiera, E. S. and Weiler, G.",
volume="201",
number="3-4",
pages="93-96",
abstract="Numerous urine samples were found to be positive when using a new amphetamine immunoassay (AxSYM). Confirmation analysis was carried out in a second laboratory at &quot;reasonable prices&quot; using a simple TLC-method with non specific ninhydrine detection and resulted in many &quot;positive&quot; confirmation findings. The GC/MS analysis clearly indicated the absence of amphetamine derivatives regularly encountered in forensic toxicology. The false-positive immunochemical findings may probably be caused by endogenous substances.<p /><p>Language: de</p>",
language="de",
issn="0003-9225",
doi="",
url="http://dx.doi.org/"
}