• How The Sweat Patch Works

    PharmChek® captures insensible perspiration, the uncontrolled loss of sweat from the skin, in an absorbent pad that ...

  • Understanding Sweat Patch Results

    The PharmChek® Drugs of Abuse Sweat Patch is a collection device designed to retain evidence of drug use. The patch is a better alternative to urine testing for drugs.

  • News & Updates

    PharmChek Drugs of Abuse Sweat Patch news.

  • Research Articles

    Research and scientific articles on the PharmChek Drugs of Abuse Sweat Patch.

  • Court Cases

    PharmChem, Inc. PharmChek Drugs of Abuse Sweat Patch upheld in court, PharmChek Drug Patch upheld in court. Court cases about the use of the Sweat Patch for drug testing.

  • Technical and Frequently Asked Questions

    Do you have questions on the PharmChek® Drugs of Abuse Sweat Patch? Find your answers here. 

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  • Sweat Patch vs Urine Test

    The PharmChek® Drugs of Abuse Detection Patch is a successful and economical alternative to urinalysis and provides distinct advantages over drug testing using urine.