Michigan’s THC definition expressly includes THCA.
Is THCA Legal in Michigan?
Michigan’s THC definition expressly includes THCA. The controlling authority is MCL 333.27953, amended by HB 4517 (2021), and the measurement standard Michigan applies is total THC — the statute names THCA directly.
That standard decides everything. Where a state measures total THC, delta-9 plus 87.7% of the THCA content, high-THCA material fails on the same lab result that passes federally. Run any Certificate of Analysis through the total THC calculator to see both numbers.
What Happened in Michigan
The Cannabis Regulatory Agency states plainly that cannabis with more than 0.3% THC including THCA is marijuana by definition, and unlicensed sale violates state law.
What This Means for Buyers in Michigan
Licensed, METRC-tracked dispensaries only.
Michigan THCA Questions
Why is THCA not permitted in Michigan?
Because Michigan measures total THC — the statute names THCA directly rather than delta-9 alone, under MCL 333.27953, amended by HB 4517 (2021). High-THCA material fails that test by definition.
Is any hemp product still legal in Michigan?
Licensed, METRC-tracked dispensaries only.
Does federal legality override this?
No. Federal law is a floor, not a ceiling — appellate courts have repeatedly upheld stricter state standards.