![]() In light of potential false positive results brought on by the presence of CBD in samples, the Michigan State Police recently stopped testing blood for the presence of THC. According to Michigan State Police spokesperson Shanon Banner, officials have also informed county prosecutors around the state of the discrepancy and advised them not to use the lab's test findings for cannabis blood testing as evidence in open cases. In an email to the Associated Press, Banner said that the pause in laboratory analysis of THC will be in place indefinitely “as we work to learn more and/or until we can institute another validated method of testing to ensure accuracy.” Cheri L. Bruinsma, the executive director of the Prosecuting Attorneys Association of Michigan, wrote an email to county prosecutors, saying, “We were alerted by the MSP Crime Lab that there is likely an issue with toxicology screens for blood tests for marijuana results … the test is unable to distinguish between THC and CBD. They’re working to understand the issue and scope of the problem. They expect to have additional information in the next few weeks. In the meantime, if you have a case that relies on a THC toxicology screening, you should not rely on that result.” Michael Komorn, an attorney specializing in criminal defense and cannabis law said blood test evidence of THC is commonly used to prosecute driving violations. He added, “I think that it’s time to get a new lab. Because the procedures and protocols that are being used here to measure cannabis blood tests , if they’re wrong and unscientific—and they’ve been convicting people wrongly because their tests are wrong—I think a criminal investigation should be opened. I think people should be held accountable.” Comments are closed.
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