Guide · 2026-09-21
How to read a cannabis label
THC percentages, batch numbers, and lab marks: what the package is required to show.
Licensed cannabis packages carry a universal symbol, a THC amount, a batch or UID, and a warning. If a jar has none of that, you are not in a licensed retail channel.
Flower labels list THC as a percentage of weight. Edibles list milligrams per serving and per package. Those are lab measurements, not medical dosing instructions.
“Lab tested” in a licensed market means a state-licensed lab screened the batch. It is not a guarantee of how you will feel.
Questions
What does the THC percentage mean?
On flower it is the lab-reported share of THC by weight in that batch. It is not a medical dose. Start with a small amount of any new product.