How the Drug Patch Works
The Sweat Patch is worn on the upper arm, (lower midriff and lower back are alternative sites). The skin where the patch will be worn is thoroughly and aggressively cleaned with alcohol pads to remove dirt, oil and dead skin cells prior to application. The Sweat Patch should be worn for a minimum of 24 hours to ensure an adequate amount of sweat is collected for testing.
After the patch is worn, the absorption pad is removed and sent with a completed chain-of-custody form to CRL to be tested for drugs of abuse. Clinical studies have shown that drugs and drug metabolites contained in the pad are stable for days at room temperature, and months in a freezer. The Sweat Patch is tamper evident when applied correctly. A unique number is imprinted on each patch to aid with chain-of-custody identification. The Sweat Patch is also gender-neutral and eliminates the need for same sex observations.
The standard panel includes Methamphetamine, Cocaine, Opiates, Phencyclidine, and Marijuana. The expanded panel includes everything from the standard panel as well as Hydrocodone, Hydromorphone, Oxycodone, and Oxymorphone. The same patch does the testing, so the expanded panel option can be applied after the removal from the client.