Founded in 2015, PSI Labs is Michigan’s first Safety Compliance Facility to hold both adult-use and medical licenses. In July 2021, PSI expanded its footprint to California with the acquisition of one of California’s first cannabis testing labs, pH Solutions. View our press release to learn more about this exciting expansion.

PSI’s laboratory facilities are ISO-17025 accredited and offer a full-suite of cannabis testing services. Devoted to research, advocacy and quality control testing, PSI Labs is working to elevate the conversation around transparent, accurate cannabis testing and proper industry regulations.

Using the most advanced techniques in analytical chemistry, PSI Labs provides a full host of cannabis testing services, allowing Michigan’s licensed provisioning centers, processors and growers - as well as caregivers, patients and adult homegrowers - the assurance that their products are of the highest quality.

Our services include but are not limited to on-site sampling, cannabinoid profiling (potency test), terpenoid profiling, foreign matter exams (mold, mildew, fungus and foreign material screening using microscopy), microbiological screening, mycotoxin screening*, moisture testing, water activity testing, residual solvent screening, chemical residue testing (pesticide and fungicide screening), heavy metal screening, DNA-based plant sexing and Vitamin E-acetate screening.

*California only.

PSI Labs also offers individualized consultation services. PSI Labs provides comprehensive services for licensed provisioning centers, edibles and concentrate processors, growers, as well as patients and caregivers who require the expertise of an advanced laboratory. Just write us at info@psilabs.org with any questions or inquiries.


Lifelong friends Ben Rosman and Lev Spivak-Birndorf founded PSI Labs in 2015.

Benjamin J. Rosman, JD

Ben Rosman earned his J.D. in 2012 from Wayne State University, and his B.A in 2004 from the University of Colorado at Boulder. He is admitted to the bars of the State of Michigan and the United States District Court for the Western District of Michigan. Ben is a member of the Michigan Bar Association’s Marijuana Law Section.

Prior to cofounding PSI Labs, Ben specialized in medical marijuana criminal defense. In concert with his work as CEO of PSI Labs, Ben works within the cannabis community as an ambassador for Safety Compliance Facilities in the interest of good laboratory practice, sound science and patient safety to effect meaningful change, focusing on policy and legislation in matters of rule making and cannabis science.

Ben is a medical marijuana patient with epilepsy. He has successfully used medical cannabis to reduce his pharmaceutical seizure medications under the care of his neurologist.

Lev Spivak-Birndorf, Msc, PhD

Lev Spivak-Birndorf completed a post-doctoral research fellowship in metal isotope geochemistry at Indiana University. Prior to working at Indiana University, Lev received his doctorate in geochemistry and cosmochemistry at Arizona State University.

In 2011, Lev was awarded the highly competitive NASA Earth & Space Science Fellowship to fund his doctoral research. Lev has over 10 years of experience operating and maintaining a variety of analytical chemistry instruments. He has considerable experience generating and presenting empirical chemical data as an author of numerous peer-reviewed scientific papers and international conference presentations.

His work is largely based on the powerful analytical technique of mass spectrometry, which is a critical component to the testing of both naturally occurring compounds and undesirable adulterants in medical cannabis.

Lev is a medical marijuana patient with Crohn’s Disease. He has completely eliminated all pharmaceutical medications from his therapy regimen, and now treats his symptoms with medical cannabis.

PSI Labs’ success reflects Lev and Ben’s passion for the science, advocacy, research and the medical efficacy of cannabis. After their start in 2014, PSI Labs has grown to become the largest and most well-known cannabis testing laboratory in the state of Michigan. Devoted to research, advocacy, and quality control, PSI Labs has provided testing and safety compliance screening for temporary operators, state licensed facilities, patients, caregivers, legal defense teams, investigative news organizations and more. We’ve also collaborated on research projects with the University of Michigan as well as individuals trying to improve their processes and develop new, more science-proven methods.


Scientia Potestas Est

PSI Labs’ mission is to be the leading cannabis testing laboratory in Michigan and beyond, providing professional, reliable, accurate cannabis testing, having the most expertise, experience, infrastructure and best reputation in the industry. We strive for total transparency in all that we do.

PSI Labs wants to inspire people that they can empower themselves with data – seeing cannabis testing beyond mandatory compliance testing and marketing. That they can use data from PSI Labs to develop more sound, science-based methods, collaborate to do important research, and perhaps most importantly, help individuals make informed decisions about dosing and medical product purchasing for themselves. “Knowledge is Power!”