The first number to find on a cannabis label is THC per serving, not THC percentage. A package that lists 10 mg of THC per gummy and holds 10 gummies gives you 100 mg in the bag, while a flower jar listing 24% THC describes the concentration of the plant material by weight. Those two numbers answer different questions, and reading them out of order is how people end up with a dose they did not plan for. Read the panel in this order: serving size, THC and CBD per serving, servings per package, net weight, batch and package dates, then the license and warning block. The sections below walk through each field.
cannabis label serving size
Serving Size and THC Per Serving
Every regulated label states a serving size and the milligrams of THC in that serving. On edibles and beverages this is the number that controls your dose. On flower and concentrates the label may list milligrams per package instead, so you divide by the amount you actually use. A vape cartridge label describes the whole unit, not one puff.
Cannabis Label vs Test Results Comparison Review
- Use milligrams per serving when you want a repeatable dose, which covers most edibles and drinks.
- Use total milligrams per package when you portion flower, hash, or concentrate yourself.
- Ignore names like 'strong' or 'mild' as a dose guide. They are not standardized.
Percent THC Versus Milligrams
Percentage describes concentration: how much of the product weight is THC. Milligrams describe the amount in the package. Flower, shake, and most concentrates are sold on percentage. Edibles, tinctures, and beverages are sold on milligrams. Comparing a 30% flower label to a 10 mg edible label is a category error.
cannabis label terpenes list
Where Percentage Helps
- Comparing two batches of the same flower or the same type of concentrate.
- Estimating how much THC you take in during a single smoke or vape session.
Where Percentage Misleads
- Deciding an edible dose. A 90% distillate cartridge and a 90% infused chocolate are not interchangeable.
- Judging quality. Potency is not the same as a good cure, clean burn, or pleasant effect.
- Comparing across product forms, since extraction and infusion change how much THC reaches you.
CBD and Minor Cannabinoids
Look for THC and CBD listed separately, plus any minor cannabinoids the lab reported, such as CBG, CBN, CBC, or THCA. THCA is the acidic form found in raw plant material and converts to THC with heat. On flower labels, 'total THC' usually means THC plus the converted THCA, and that is the figure to compare against another flower label. CBD labels get confusing because hemp-derived CBD falls under different rules than state-licensed cannabis, so a CBD bottle on a shelf may not carry the same panel.
Terpenes
Terpene content is optional on many labels, but when it appears it is listed as a percentage or in milligrams per gram. Myrcene, limonene, pinene, linalool, and caryophyllene are the ones you see most often. Treat terpene data as a hint about aroma and flavor, not as a medical claim. If a label promises a specific effect from a terpene, that is marketing language rather than a tested outcome.
Net Weight, Batch, and Dates
Net weight tells you what you paid for: 3.5 g, 7 g, 1 g, 100 mg, or 10 ml. Check it against the price per unit if you are comparing value. Batch or lot numbers let you trace a product and match it to a lab report, which matters if you want to verify potency or check for a recall. Harvest and packaging dates matter for flower, since terpenes fade over months even in sealed packaging. A recent package date is one of the few freshness signals a label gives you.
Testing and Cultivation Claims
Regulated labels carry lab results for potency and, depending on the state, for pesticides, microbials, heavy metals, and solvents. A 'tested' claim without a batch number you can look up is not verifiable. Terms like organic, all natural, or solvent free are not federally regulated for cannabis, so treat them as grower statements unless a state program certifies them. Health claims are a separate red flag. CBD and cannabis products are not FDA approved to treat disease, and a label that says otherwise is overstating what the product is.
License, Universal Symbol, and Warnings
The license or registration number identifies who made and sold the product. The universal symbol, often a diamond with 'THC' and an exclamation mark, marks retail cannabis in legal states. Warning text covers impaired driving, use during pregnancy, keeping the product away from children, and the fact that cannabis can impair you. If a package has no license number, no symbol, and no warnings, it is not a regulated product, and the numbers printed on it are unverified.
A 30-Second Label Check
- Find the serving size.
- Read THC and CBD per serving.
- Multiply by servings per package to get the total.
- Check net weight against the price.
- Note the batch number and package date.
- Confirm the license number, universal symbol, and warnings are present.
What to Prioritize by Product Type
For edibles and drinks, the per serving milligram number is the whole story: start low and treat 5 mg as a reasonable first serving. For flower, compare total THC percentage, package date, and net weight, and set the strain name aside if the lab panel contradicts it. For vape carts, check total milligrams and the listed ingredients, since cutting agents and added terpenes belong on the label. For topicals, potency matters less because absorption is local, so read the ingredient list first. In every case the label is a starting point. Your own response to a product is the final data point, and writing it down makes the next label you read more useful.