A comparative evaluation of the instant-view 5-panel test card with OnTrak TesTcup Pro 5: comparison with gas chromatography-mass spectrometry.

This study compared the ability of two on-site testing devices, Instant-View Test Card and OnTrak TesTcup Pro 5, to discriminate negative from positive urine samples for cannabinoids, cocaine metabolite, opiates, amphetamines, and benzodiazepines. The on-site devices were evaluated in a precision study with fortified urine samples and in a clinical study with samples submitted for forensic urine drug testing. For precision, seven stocks were prepared per device.