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.


Community Service Volunteering

Laboratory Sponsored Programs

Keystone is proud to announce the Laboratory has received TWO Emerald Test Badges for the Spring 2018 round of tests.  Potency - to demonstrate we accurate report results, and Heavy Metal - to demonstrate we care about accurately detecting contaminants for clients and patients.

Contact Information

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.

Mission Statement

We are proud to announce 

We are officially the first nationally certified 

Woman-Owned Cannabis Laboratory in the U.S. 

Community Resources

4949 Queen Ave

Harrisburg, PA 17109

4733 Amber Valley Parkway

Fargo, ND 




Sun - Thurs 8am - 5pm

Friday  8am-3pm

Closed Saturdays

Hours: Sun-Thurs 8am - 5pm

Fri 8am-3pm


Cannabinoid Profile & Potency

Terpene Profile & Potency

Pesticide Detection

Residual Solvents

Microbial Detection

Heavy Metal Detection

Macroscopic Inspection

Plant Profile

Leachable Studies

Stability Studies

Cultivation Consultation

Strain Confirmation

Customized Services