Continue to Site »
Site will load in 15 seconds
Advertisment: OHP » OHP Order 112 » CBT ROS Banner 970x250 August 2025 » ohp-april-botanigard

Michigan Lab May Have Issued Inaccurate THC Potency Data

The Marijuana Regulatory Agency is cautioning patients who purchased products tested by The Spott.

Michigan Testing Lab Iarygin Andrii
Iarygin Andrii/Adobe Stock

Michigan’s Marijuana Regulatory Agency (MRA) issued an advisory of “inaccurate potency results” from The Spott, a licensed testing lab located in Kalamazoo. Between May 3 and July 11, products tested at The Spott registered THC potency levels that could be incorrect. 

Advertisment: Cannabis Business Times » Cannabis Business Times Best Cannabis Companies to Work For » CBT Best Companies 2026 ROS Parallax Reveal » bcc-ads-730x570

THC potency levels listed on products that came through The Spott were either higher or lower than the actual levels, according to the MRA. It’s unclear how the inaccurate THC levels were reported to Michigan’s statewide monitoring system.

Advertisment: Cannabis Business Times » Cannabis Business Times Best Cannabis Companies to Work For » CBT Best Companies 2026 ROS Parallax Reveal » bcc-ads-730x570

The Spott is one of six labs licensed to test cannabis products in Michigan. During the timeline cited by the MRA, The Spott was testing products sourced from both licensed cultivators and caregivers (who, according to recent court orders, must sell their cannabis products to those licensed cultivators, who will then funnel the products to testing labs).

Advertisment: Cannabis Business Times » Cannabis Business Times house ads » CBT House Ad ROS 300x250 Medium Rectangle May 1-30 2025 » CBT HOUSE AD 300X250.gif

“We’ve identified our problems and we’ve corrected them and we’re going on from here,” Linda Palmatier, owner of The Spott, told MLive. “There were some inaccurate numbers; we worked with [the MRA] to solve it.” 

Advertisment: Cannabis Business Times » Cannabis Business Times Best Cannabis Companies to Work For » CBT Best Companies ROS 300x250 Medium Rectangle » great-place-2026-animation300x250.gif

State officials ask that any medical cannabis patients report adverse reactions to marijuana products to the MRA by emailing [email protected] or by calling 517-284-8597.

Advertisment: Cannabis Business Times » Cannabis Business Times house ads » CBT House Ad ROS 300x250 Medium Rectangle May 1-30 2025 » CBT HOUSE AD 300X250.gif
Advertisment: Cannabis Business Times » Cannabis Business Times house ads » CBT House Ad ROS 300x250 Medium Rectangle May 1-30 2025 » CBT HOUSE AD 300X250.gif
Page 1 of 65
Next Page
Advertisment: Fluence » Fluence Order 95 » CBT ROS Mobile Adhesion 360x120 August 2025 » FLU-DBA_INSA_360-x-120