PharmChem, Inc., is the manufacturer and sole source provider of the PharmChek® Drugs of Abuse Sweat Patch.

For over 30 years, the PharmChek® Drugs of Abuse Sweat Patch has been a successful and economical device for long-term and continuous drug testing that provides distinct advantages over urine, saliva, or hair testing.



Contact us:



Phone: (855) 458-4100

Address: 2411 E. Loop 820 N. Fort Worth, TX 76118

Email: info@pharmchem.com

