The sweat patch is designed to be worn for seven days. The sweat patch continuously captures any drug and/or drug metabolites that are excreted in the sweat during the seven-day wear period. One week of sweat patch monitoring is equivalent to three to four urine specimen tests spread over a week.
Difficult to Adulterate and Substitute
Each patch is printed with a unique serial number that the operator records when applying the patch. All the common methods of adulterating the collection pad leave visible signs that can be detected by the operator who removes the patch.
Detects Six Drugs, Does Not Detect Alcohol
The laboratory analyzes the sweat patch for the presence of cocaine, marijuana, opiates, amphetamine, methamphetamine, and PCP. The sweat patch captures the parent drug for cocaine, heroin, and marijuana; urine tests detect the metabolites of these drugs. The patch does not detect alcohol.
Laboratory Test, Not an On-Site test
The patch gives no visible indication of the presence or absence of drugs. The operator sends the patch to the laboratory, which performs GC/MS confirmation testing on non-negative screening results.
No Expiration Date
The sweat patch consists of an absorbent pad held in place by a semi-permeable adhesive film. There are no reagents, enzymes, or chemicals in the pad, so there is no expiration date for the patches.