Is THCA Federally Legal? The Hemp Definition, Explained
Federal law defines hemp
The Agriculture Improvement Act of 2018, the "2018 Farm Bill," removed hemp from the federal Controlled Substances Act and wrote the definition of hemp into federal law at 7 U.S.C. § 1639o. That definition is the national standard. Every lab report, every label claim, and every compliance statement in the hemp industry is measured against it.
The definition covers the plant Cannabis sativa L. and its derivatives, extracts, and cannabinoids with a delta-9 tetrahydrocannabinol concentration of not more than 0.3 percent on a dry-weight basis. Material at or below that line is hemp. Material above it is not.
Read our Farm Bill compliance statementWhere THCA fits
THCA (tetrahydrocannabinolic acid) is the acidic precursor to delta-9 THC. It is a different molecule; it becomes delta-9 THC only when heat removes its carboxyl group. The federal definition in force today measures delta-9 THC specifically, so a product is tested against that number.
Public Law 119-37 amends § 1639o so that the 0.3 percent limit is measured as total THC, including THCA, rather than delta-9 THC alone. Under the current continuing resolution its effective date is December 11, 2026. Until that date, the delta-9 standard described above is the federal definition in force, and it is the standard every NUUG BAR Certificate of Analysis is read against.
What a COA proves
A Certificate of Analysis from an ISO-accredited laboratory reports delta-9 THC and THCA as separate line items, plus a Total THC calculation (delta-9 THC + THCA × 0.877). Because both numbers are on the same report, a COA documents a product against the delta-9 standard and the total-THC standard at the same time.
That is why every NUUG BAR and DRIZZLERS batch ships with a scannable COA, and why the batch number on the package matches the sample ID on the report. If the two do not match, the report does not belong to the product in your hand.
View lab results for every batchWhat this page does not cover
This page describes federal law only. Nothing here is legal advice. Buy from licensed retailers, keep the COA with the product, and confirm the rules that apply to you before purchasing or traveling with any cannabis product.
How to read a full COACommon Questions
Is THCA federally legal?
Federal law defines hemp at 7 U.S.C. § 1639o as cannabis and its derivatives with not more than 0.3 percent delta-9 THC on a dry-weight basis. THCA products are tested and sold against that definition. A Certificate of Analysis is the document that shows a product's delta-9 THC and THCA content.
What does 0.3% delta-9 THC mean?
It is the maximum delta-9 THC concentration, measured on a dry-weight basis, that cannabis material can contain and still meet the federal definition of hemp.
Does the federal hemp definition count THCA?
The definition in force today measures delta-9 THC only. Public Law 119-37 amends the definition to a total-THC standard that includes THCA, with an effective date of December 11, 2026 under the current continuing resolution.
How do I verify a product meets the federal definition?
Match the batch number on the package to the sample ID on its Certificate of Analysis, then read the delta-9 THC and THCA lines. NUUG BAR publishes the COA for every batch on its Lab Results page.