How to Identify Dosage on THC Labels: A Step-by-Step Guide
Learn to read THC labels correctly: find servings per container, THC per serving, convert THCA, and verify lab results to dose accurately.
Quick answer
Cannabis label rules come from state agencies, not one federal body. Each state sets its own required text, symbols, potency limits, and testing panel. A label approved in California can fail in Washington. Federal agencies step in on health claims, organic claims, and shipping.
How to Identify Dosage on THC Labels: A Step-by-Step Guide
Who writes the rules
State cannabis agencies publish and enforce label standards. Examples include the California Department of Public Health, the Washington State Liquor and Cannabis Board, the New York Office of Cannabis Management, and the Colorado Marijuana Enforcement Division. Federal agencies cover narrow pieces. The FTC polices advertising and health claims under the FTC Act. The FDA polices drug and supplement claims. The USDA polices the organic seal. The US Postal Service bans mailing cannabis.
what are tested dates on cannabis labels
Items most states require
- A universal cannabis symbol
- The licensee or registration number
- THC and CBD content in milligrams per serving and per package
- Net weight and serving count
- Manufacture date and expiration or use-by date
- Batch or lot number tied to a lab report
- State warning text
Universal symbol
California uses a triangle with a cannabis leaf and an exclamation point. Washington uses a similar mark. The symbol goes on the label and on the front panel of the package, with a minimum print size set by rule.
Potency numbers
Labels state THC in milligrams per serving and per package. Edibles cap at 10 mg per serving and 100 mg per package in California, Colorado, and Washington. Medical products face looser limits in some states. States also set accuracy tolerances. A common range is plus or minus 10 percent against the lab result, with different bands for flower, edibles, and concentrates.
What are Tested Dates on Cannabis Labels
Warning text
Standard warnings cover: for adults 21 and older; keep out of reach of children; do not drive or operate machinery under the influence; avoid use during pregnancy or breastfeeding; poison control at 1-800-222-1222 in some states; and a statement that the FDA has not approved the product.
Testing panel
State labs test for potency, pesticides, microbial contaminants, heavy metals, mycotoxins, and residual solvents. Some states add terpenes, moisture, water activity, and filth. The batch number on the label links back to the certificate of analysis.
What is banned on a label
- Health claims, such as "treats anxiety" or "cures insomnia"
- The word organic without USDA certification
- Cartoon characters, candy names, and shapes that draw children
- Unproven Made in USA claims
- Claims of FDA approval
Hemp and delta-8
The 2018 Farm Bill defines hemp as cannabis with 0.3 percent delta-9 THC or less on a dry weight basis. Hemp products under that limit sit outside state cannabis programs in many states, so label rules differ. Several states have moved to restrict intoxicating hemp cannabinoids such as delta-8 THC. Rules change often. Check the state regulator before printing.
Checklist before print
- Confirm the license number format.
- Match THC and CBD numbers to the lab report.
- Check font size and placement of the universal symbol.
- Run warning text word for word.
- Check child-resistant packaging rules.
- Confirm batch and date codes.
Open questions
No national label standard exists. Federal rescheduling of cannabis was under review as of early 2025. Interstate commerce rules are unsettled. Confirm current requirements with the state agency that licenses the product.