Drug Testing

PharmChek® Drugs of Abuse Detection Patch

Drug PatchThe PharmChek® Drugs of Abuse Detection Patch acts as a collector for nonvolatile components of sweat, including drugs of abuse. It consists of an adhesive plastic film that holds an absorption pad in place against the skin.

The adhesive film of the patch is a semi-permeable barrier that allows oxygen, carbon dioxide, and water vapor to pass through so that the skin can breathe normally. Larger molecules (such as drugs) are trapped in the absorption pad portion of the patch. Contaminants from the environment cannot penetrate the adhesive barrier from the outside, so the patch can be worn during normal activities including bathing, swimming, and athletics.

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