Full spectrum, broad spectrum or isolate?

Full spectrum: CBD plus everything else, including THC

Full-spectrum extract keeps the plant’s other cannabinoids, terpenes and up to 0.3% delta-9 THC by dry weight. A 30 mL bottle can hold tens of milligrams of THC: the cbdMD full-spectrum 1,500 mg COA we read (batch 60651L1, Aug 2026) reported 71.9 mg of total THC per 30 mL bottle, about 180 times the coming 0.4 mg limit.

From December 11, 2026, a finished hemp product may hold no more than 0.4 mg of total THC per container to stay legal hemp. Nearly every full-spectrum oil sold today is far above that.^[1]

THC in full-spectrum products can show up on a workplace drug test.

Broad spectrum: the full mix, THC removed

Broad-spectrum extract removes THC but keeps other cannabinoids such as CBG, CBN and CBC. "THC-free" usually means below the lab’s limit of detection, so check the COA: total THC should read ND (not detected).

Labels are not always right. Independent testers have found products sold as full spectrum with no THC at all, and products sold as THC-free that contained THC.^[2][3]

Isolate: pure CBD

Isolate is 99%+ CBD with no other cannabinoids. It is the simplest way to get zero THC and the easiest to dose consistently. The trade-off is the "entourage effect", the idea that cannabinoids work better together, which has not been proven in human trials.

Which should you buy?

If you are drug tested, travel, or want a product that stays legal after December 11, 2026: isolate or a broad-spectrum oil whose COA shows total THC not detected. That is why our rankings give the THC pillar 15% of the score.^[1]

Sources

1. Congressional Research Service: Changes to the statutory definition of hemp (IF13136)
2. Bonn-Miller MO et al. Labeling accuracy of cannabidiol extracts sold online. JAMA 2017
3. Leafreport: CBD sleep products report (independent tests by Infinite Chemical Analysis Labs), updated Oct 16, 2022