The PharmChek® Sweat Patch is exclusively screened by EIA and confirmed by LC-MS/MS.

All PharmChek® Sweat Patches must be sent to Clinical Reference Lab (CRL) for analysis. No other lab is approved or certified to test the PharmChek® Sweat Patch.

Standard Panel:

Cocaine and Benzoylecgonine
Opiates (Heroin, 6-AM; Morphine, codeine)
Methamphetamine
Amphetamine
Marijuana
Phencyclidine

Fentanyl Add-on Panel:

This panel cannot be purchased independently of the Standard Panel.

Expanded Panel (Fentanyl included):

Fentanyl
Norfentanyl
Hydromorphone
Hydrocodone
Oxymorphone
Oxycodone
Cocaine and Benzoylecgonine
Opiates (Heroin, 6-AM; Morphine, codeine)
Methamphetamine
Amphetamine
Marijuana
Phencyclidine

PharmChek® functions as a storage device where drugs are retained on the absorbent pad for detection at the laboratory.

Sweat analysis allows the laboratory to identify both the parent drug and metabolite. With urine, the laboratory usually identifies only drug metabolites to determine if drug use occurred.