Oregon has used a total-THC standard for years. The controlling authority is OAR 845-026-0300, under HB 3000 (2021), and the measurement standard Oregon applies is total THC — (THCA × 0.877) + delta-9.
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 Oregon
Any hemp item with 0.5 mg or more of combined THCs is an ‘adult use cannabis item,’ sellable only through OLCC-licensed channels to adults 21+. An OLCC product registry became mandatory January 1, 2026.
What This Means for Buyers in Oregon
OLCC-licensed retail only. The 2026 omnibus bill died in committee.
Oregon THCA Questions
Why is THCA not permitted in Oregon?
Because Oregon measures total THC — (THCA × 0.877) + delta-9 rather than delta-9 alone, under OAR 845-026-0300, under HB 3000 (2021). High-THCA material fails that test by definition.
Is any hemp product still legal in Oregon?
OLCC-licensed retail only. The 2026 omnibus bill died in committee.
Does federal legality override this?
No. Federal law is a floor, not a ceiling — appellate courts have repeatedly upheld stricter state standards.