Topic: THC limits and total THC

This page is built only from hashed official sources. State rows cover only the jurisdictions verified so far; for the other states, see their individual pages.

[L1] Federal, before the change: delta-9 THC at or below 0.3 percent on a dry weight basis. Source: 7 U.S.C. 1639o, GovInfo
[L1] Federal, after the change: total THC (including THCA) at or below 0.3 percent, plus the 0.4 mg per container final-product cap, staged per Pub. L. 119-103 § 2019. See federal change page. Source: Pub. L. 119-37 § 781, GovInfo
[L2] USDA testing definition, quoted: "Total THC. Total THC is the value determined after the process of decarboxylation, or the application of a conversion factor if the testing methodology does not include decarboxylation, that expresses the potential total delta-9 tetrahydrocannabinol content derived from the sum of the THC and THCA content and reported on a dry weight basis." Source: 7 CFR 990.1, eCFR
[L2] USDA conversion, quoted: "Decarboxylated. The completion of the chemical reaction that converts THC-acid (THCA) into delta-9 THC, the intoxicating component of cannabis. The decarboxylated value is also calculated using a molecular mass conversion ratio that sums delta-9 THC and eighty-seven and seven tenths (87.7) percent of THC-acid ((delta-9 THC) + (0.877 * THCA))." Source: 7 CFR 990.1, eCFR
[L1] Alaska: definition basis is delta-9; see Alaska hemp page. Source: AS 03.05.100(5)
[L5] Colorado: definition basis is delta-9; see Colorado hemp page. Source: C.R.S. 35-61-101(7) (2023 edition PDF published by Colorado OLLS; currency after 2023 UNVERIFIED)
[L1] Delaware: definition basis is delta-9; see Delaware hemp page. Source: 3 Del. C. § 2801(2)
[L1] Florida: definition basis is total delta-9; see Florida hemp page. Source: Fla. Stat. § 581.217(3)(e) (2025)
[L1] Iowa: definition basis is cross-reference to 7 CFR 990.1; see Iowa hemp page. Source: Iowa Code § 204A.2(7) (2026)
[L1] North Dakota: definition basis is total THC, level set by the commissioner; see North Dakota hemp page. Source: N.D.C.C. ch. 4.1-18.1 (definition 4)
[L1] Wyoming: definition basis is post-decarboxylation; see Wyoming hemp page. Source: W.S. 11-51-101(a)(iii)

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Authority tiers: L1 statute, L2 final/temporary rule, L3 official guidance, L4 pending bill/proposed rule, L5 news/lead/commentary (never law). Sources checked: 2026-10-30.