PuEr Labs Cannabis Testing Lab

Testing Services

Our highly skilled team is committed to providing the Michigan cannabis community with lab results that are consistently accurate, reliable, and transparent. We are able to provide our clients with the necessary state-compliant testing, research and development testing, or informational testing to caregivers and patients. All of our services can be tailored to fit your specific needs without compromising on our excellent customer service and quick turnaround time.

Potency Testing Service


A fast, accurate UHPLC method for separation and quantitation of 11 different cannabinoids, including: Δ9-THC, THCA, Δ8-THC, THCV, CBD, CBDA, CBDV, CBN, CBGA and CBC.

Terpene Testing Service


Identification and quantitation of terpenes with GC-MS.  Using mass spectrometry for this test guarantees accurate identification that cannot be achieved with older techniques such as GC-FID.

Chemical Residue Testing Service

Chemical Residue

Identification and quantitation of pesticides with LC-MS/MS & GC-MS/MS. Using both techniques protects our clients by significantly reducing the risk of false positives.

Residual Solvents Testing Service

Residual Solvents

Identification and quantitation of residual solvents in extracts and edibles via GC-MS.

Heavy Metal Testing Service

Heavy Metals

Identification and quantitation of toxic metals: arsenic, cadmium, chromium, lead, nickel and copper via ICP-MS.

Microbial Testing Service

Microbial Testing

PCR testing is a fast and accurate technique for the detection of bacteria and mold.

Water Activity & Moisture Testing Service

Water Activity & Moisture

These tests ensure that flower and products are dry enough to inhibit mold growth.

Foreign Matter Testing Service

Foreign Matter

A microscopic examination to screen for extraneous or decomposed material in cannabis products.