April 16, 2026
Last Updated: August 2026
Updated August 6, 2026: Corrected the agency name (Cannabis Regulatory Agency, CRA) and clarified that Michigan statute — MCL 333.27953, which defines THC to include THCA — makes unlicensed sale of high-THCA products illegal as marijuana under state law, not merely an agency interpretation.
THCA is one of the most legally ambiguous cannabinoids in the country right now, and Michigan is a good illustration of why. The state has a fully operational recreational cannabis market — but hemp-derived THCA from unlicensed sources sits in a complicated legal position that trips up consumers and retailers alike.
It depends on who's selling it and where. Under federal hemp law, THCA derived from hemp plants containing less than 0.3% delta-9 THC is technically legal. Michigan, however, goes further than the federal delta-9-only test: under the Michigan Regulation and Taxation of Marihuana Act (MRTMA), "THC" is defined to include THCA (MCL 333.27953), and the Cannabis Regulatory Agency (CRA) has confirmed in published guidance that products exceeding 0.3% THC — counting THCA — are marijuana under state law and can only be sold through licensed cannabis businesses.
Michigan's hemp program operates under the 2018 Farm Bill framework, which defines hemp as cannabis containing not more than 0.3% delta-9 THC on a dry weight basis. THCA, before decarboxylation, is not delta-9 THC — so hemp plants with high THCA levels technically meet the federal 0.3% delta-9 threshold. This is the same "THCA loophole" that's been exploited nationally: growers produce high-potency flower that converts to recreational-grade THC when smoked, but is technically "hemp" as tested pre-decarboxylation. In Michigan, that loophole is closed at the state level by the MRTMA's statutory definition of THC.
The Cannabis Regulatory Agency has made its position known through published guidance ("CRA Answers Recent Questions Regarding THCA"): because the MRTMA defines THC to include THCA, products with more than 0.3% THC — including THCA — are marijuana under Michigan law. This is not merely an agency interpretation; it rests on the statutory definition in MCL 333.27953. Under Michigan's recreational marijuana law, selling marijuana requires a state-issued license, and the CRA has stated that a person not licensed under the MRTMA or MMFLA who sells marijuana — including high-THCA products — is in violation of state law.
Licensed Michigan cannabis dispensaries can sell THCA products because they're already regulated under MRTMA. Smoke shops and hemp retailers selling high-THCA products are on the wrong side of Michigan law: the federal hemp law's delta-9-only test technically permits the products, but Michigan's statutory definition of THC includes THCA, so unlicensed sales are illegal at the state level regardless of the federal loophole.
The safest way to purchase THCA products in Michigan is from a licensed cannabis dispensary. You'll find high-quality THCA flower and pre-rolls there, fully tested and labeled under state requirements. THCA flower is also sold in smoke shops, hemp stores, and by online retailers shipping to Michigan — but given the MRTMA's definition of THC and the CRA's position, those unlicensed channels are selling what Michigan law treats as marijuana, and consumers and especially retailers should understand the risk.
Any THCA product you buy should come with a current Certificate of Analysis from an accredited lab showing the delta-9 THC percentage is below 0.3% on a dry weight basis. This is your primary protection as a consumer — and as a retailer, it's the documentation you need if your products are ever questioned. Note, however, that in Michigan a delta-9-only COA does not resolve state-law exposure, because the state counts THCA toward the THC total.
Delta 8 THC is a synthetically derived cannabinoid — it doesn't occur naturally in significant quantities and is produced by chemically converting CBD. Michigan brought delta-8 under the licensed cannabis system in 2021, so it can only lawfully be sold through licensed cannabis businesses. THCA, by contrast, is naturally present in the cannabis plant, and the national legal argument in its favor — that it's not THC until heated — is stronger than the argument for delta 8. In Michigan, though, both compounds end up in the same place: the MRTMA's definition of THC includes THCA, so high-THCA products, like delta-8 products, belong in the licensed channel.
The CRA has not conducted systematic sweeps targeting THCA retailers, but local law enforcement in several Michigan counties have taken action against smoke shops selling potent hemp products. The City of Grand Rapids issued guidance in 2025 discouraging hemp retailers from selling high-potency THCA products, and several retailers received compliance letters. No new statewide legislation specifically targeting THCA has been enacted — the existing MRTMA definition already covers it. But the enforcement trajectory is toward tightening, not loosening — particularly as the federal government's 2025 spending bill provisions (requiring total-THC testing, effective November 12, 2026) work their way through implementation.
Under federal hemp law, yes — if the product tests under 0.3% delta-9 THC. Under Michigan law, no when sold outside the licensed system: MCL 333.27953 defines THC to include THCA, so high-THCA products are marijuana and require a licensed seller. For consumers, personal possession within MRTMA limits is legal for adults 21+. For retailers, the legal exposure of unlicensed sales is real.
Not lawfully, under the state's reading. Because the MRTMA's definition of THC includes THCA, the CRA's position is that potent THCA products are marijuana that cannot be sold without a cannabis license, though local enforcement has been inconsistent. Smoke shops operating in this space should maintain rigorous COA documentation, understand the state-law risk, and monitor for enforcement developments.
Yes. THCA converts to delta-9 THC in the body after consumption. If you use THCA products, expect a positive result on a standard urine drug test for THC. This is true regardless of whether the product is labeled as "hemp."
Delta-9 THC in hemp products at federally compliant levels (under 0.3% by dry weight) is technically legal at the federal level. Michigan's broader statutory definition of THC — which includes THCA — pulls high-potency hemp-derived THC products sold outside the licensed market into the state's marijuana laws.
Both produce psychoactive effects. THCA flower, when smoked, converts to delta-9 THC — which is generally considered more potent than delta 8. THCA flower from a hemp shop can be functionally equivalent to recreational cannabis flower.
Last Updated: August 2026
Updated August 6, 2026: Corrected the agency name (Cannabis Regulatory Agency, CRA) and clarified that Michigan statute — MCL 333.27953, which defines THC to include THCA — makes unlicensed sale of high-THCA products illegal as marijuana under state law, not merely an agency interpretation.
THCA is one of the most legally ambiguous cannabinoids in the country right now, and Michigan is a good illustration of why. The state has a fully operational recreational cannabis market — but hemp-derived THCA from unlicensed sources sits in a complicated legal position that trips up consumers and retailers alike.
It depends on who's selling it and where. Under federal hemp law, THCA derived from hemp plants containing less than 0.3% delta-9 THC is technically legal. Michigan, however, goes further than the federal delta-9-only test: under the Michigan Regulation and Taxation of Marihuana Act (MRTMA), "THC" is defined to include THCA (MCL 333.27953), and the Cannabis Regulatory Agency (CRA) has confirmed in published guidance that products exceeding 0.3% THC — counting THCA — are marijuana under state law and can only be sold through licensed cannabis businesses.
Michigan's hemp program operates under the 2018 Farm Bill framework, which defines hemp as cannabis containing not more than 0.3% delta-9 THC on a dry weight basis. THCA, before decarboxylation, is not delta-9 THC — so hemp plants with high THCA levels technically meet the federal 0.3% delta-9 threshold. This is the same "THCA loophole" that's been exploited nationally: growers produce high-potency flower that converts to recreational-grade THC when smoked, but is technically "hemp" as tested pre-decarboxylation. In Michigan, that loophole is closed at the state level by the MRTMA's statutory definition of THC.
The Cannabis Regulatory Agency has made its position known through published guidance ("CRA Answers Recent Questions Regarding THCA"): because the MRTMA defines THC to include THCA, products with more than 0.3% THC — including THCA — are marijuana under Michigan law. This is not merely an agency interpretation; it rests on the statutory definition in MCL 333.27953. Under Michigan's recreational marijuana law, selling marijuana requires a state-issued license, and the CRA has stated that a person not licensed under the MRTMA or MMFLA who sells marijuana — including high-THCA products — is in violation of state law.
Licensed Michigan cannabis dispensaries can sell THCA products because they're already regulated under MRTMA. Smoke shops and hemp retailers selling high-THCA products are on the wrong side of Michigan law: the federal hemp law's delta-9-only test technically permits the products, but Michigan's statutory definition of THC includes THCA, so unlicensed sales are illegal at the state level regardless of the federal loophole.
The safest way to purchase THCA products in Michigan is from a licensed cannabis dispensary. You'll find high-quality THCA flower and pre-rolls there, fully tested and labeled under state requirements. THCA flower is also sold in smoke shops, hemp stores, and by online retailers shipping to Michigan — but given the MRTMA's definition of THC and the CRA's position, those unlicensed channels are selling what Michigan law treats as marijuana, and consumers and especially retailers should understand the risk.
Any THCA product you buy should come with a current Certificate of Analysis from an accredited lab showing the delta-9 THC percentage is below 0.3% on a dry weight basis. This is your primary protection as a consumer — and as a retailer, it's the documentation you need if your products are ever questioned. Note, however, that in Michigan a delta-9-only COA does not resolve state-law exposure, because the state counts THCA toward the THC total.
Delta 8 THC is a synthetically derived cannabinoid — it doesn't occur naturally in significant quantities and is produced by chemically converting CBD. Michigan brought delta-8 under the licensed cannabis system in 2021, so it can only lawfully be sold through licensed cannabis businesses. THCA, by contrast, is naturally present in the cannabis plant, and the national legal argument in its favor — that it's not THC until heated — is stronger than the argument for delta 8. In Michigan, though, both compounds end up in the same place: the MRTMA's definition of THC includes THCA, so high-THCA products, like delta-8 products, belong in the licensed channel.
The CRA has not conducted systematic sweeps targeting THCA retailers, but local law enforcement in several Michigan counties have taken action against smoke shops selling potent hemp products. The City of Grand Rapids issued guidance in 2025 discouraging hemp retailers from selling high-potency THCA products, and several retailers received compliance letters. No new statewide legislation specifically targeting THCA has been enacted — the existing MRTMA definition already covers it. But the enforcement trajectory is toward tightening, not loosening — particularly as the federal government's 2025 spending bill provisions (requiring total-THC testing, effective November 12, 2026) work their way through implementation.
Under federal hemp law, yes — if the product tests under 0.3% delta-9 THC. Under Michigan law, no when sold outside the licensed system: MCL 333.27953 defines THC to include THCA, so high-THCA products are marijuana and require a licensed seller. For consumers, personal possession within MRTMA limits is legal for adults 21+. For retailers, the legal exposure of unlicensed sales is real.
Not lawfully, under the state's reading. Because the MRTMA's definition of THC includes THCA, the CRA's position is that potent THCA products are marijuana that cannot be sold without a cannabis license, though local enforcement has been inconsistent. Smoke shops operating in this space should maintain rigorous COA documentation, understand the state-law risk, and monitor for enforcement developments.
Yes. THCA converts to delta-9 THC in the body after consumption. If you use THCA products, expect a positive result on a standard urine drug test for THC. This is true regardless of whether the product is labeled as "hemp."
Delta-9 THC in hemp products at federally compliant levels (under 0.3% by dry weight) is technically legal at the federal level. Michigan's broader statutory definition of THC — which includes THCA — pulls high-potency hemp-derived THC products sold outside the licensed market into the state's marijuana laws.
Both produce psychoactive effects. THCA flower, when smoked, converts to delta-9 THC — which is generally considered more potent than delta 8. THCA flower from a hemp shop can be functionally equivalent to recreational cannabis flower.
