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Chemical Testing Supervisor
Tom Johnson, B.S.   
Phone: (307) 777-7868


The mission of the Wyoming Public Health Laboratory's Chemical Testing Program (CTP) is to support public safety by providing alcohol and drugs of abuse testing to a wide variety of federal and state agencies in a reliable, cost effective, and timely manner. To accomplish this mission, the CTP offers state of the art and quality assured forensic toxicology services, and implements new protocols and technologies as necessary. The CTP also manages the Wyoming Breath Alcohol Testing Program by providing operator training, procedure development, instrument maintenance, and certification of both operators and instruments.


The Chemical Testing Laboratory of the Wyoming Public Health Laboratory is comprised of the Drug Toxicology and Alcohol Testing sections. Testing is done under the authority of WS 31-6-105(a). The Drug Toxicology lab is responsible for testing biological samples for controlled and non-controlled substances, while the Alcohol lab performs testing for blood alcohol and is responsible for the Breath Alcohol Testing Program.

The Chemical Testing Laboratory supports a variety of agencies and programs including federal, state, county, and municipal law enforcement agencies, the Department of Corrections, Department of Family Services, county coroners, juvenile probation offices, group homes, and treatment centers.

Litigation Support Packages for testing performed at this laboratory are available to Defense Attorneys for a fee of $1.00 per page non-certified and $3.00 per page for certified copies. 

Go to these pages for more information:

Price List

Drug Toxicology Section  

Alcohol Section



Letter to Submitting Agencies Regarding WCTP Billing Policies

Credit Card Authorization Form

Price List