We are proud to announce: 

We are officially the first nationally certified 

Woman-Owned Cannabis Laboratory in the U.S. 

Keystone State Testing

 is an independent, locally owned analysis, biotechnology, and research facility.  Through scientific process we seek to enable cultivators, dispensaries, manufacturers, and consumers with knowledge and transparency. We are committed to excellence by ensuring accuracy, safety, speed, reproducibility, and cost effective solutions for our clients.

Cannabinoid Profile & Potency

Terpene Profile & Potency

Pesticide Detection

Residual Solvents

Microbial Detection

Heavy Metal Detection

Macroscopic Inspection

Plant Profile & Gender

Leachable Studies

Accelerated Stability Studies

Cultivation Consultation

Strain Confirmation


Vapor Analysis



Customized Services

Community Service Volunteering

Laboratory Sponsored Programs

Hours: Sun-Thurs 8am - 5pm

Fri 8am-3pm



Community Resources

Contact Information


Mission Statement


Keystone State Testing strives to be the gold standard in Marijuana testing by achieving the highest levels of accuracy and precision in analytical solutions while using the highest levels of integrity, rigor and scientific standards.

4949 Queen Ave, Ste 104

Harrisburg, PA 17109 


We now offer PA Certified hemp sampling! 

For more information please speak directly to our Hemp Coordinator:

Mr. Robert Gearhart