How to Read a Label

01Every label has the same five things

It feels like every dispensary product has different packaging, different terminology, different fonts. They mostly don’t. The same five pieces of information are on every legal product, just rearranged. Once you know what to look for, you can read any label in 20 seconds.

Those five things are: total cannabinoid content, per-serving dose, batch ID, harvest or package date, and a link to the Certificate of Analysis. Everything else on the label is marketing.

02mg vs. % — they mean different things

Flower is labeled in percent: “22% THC” means 22% of the flower’s weight is THC. A 1g pre-roll at 22% has roughly 220 mg of THC in the whole joint.

Edibles, tinctures, and capsules are labeled in milligrams: a gummy might be “5 mg per piece, 100 mg per bag.” That number is the actual dose.

These two are not interchangeable. “20% THC” and “20 mg THC” don’t describe products of similar strength. Flower percent tells you concentration; edible mg tells you dose. Always ask for the per-serving mg when buying anything that isn’t flower.

03The COA is the receipt

The Certificate of Analysis is the lab test that confirms what’s actually inside. By state law, every regulated cannabis product has one — usually accessible through a QR code or a printed link on the package.

A real COA shows you: total cannabinoids (THC, CBD, and minor cannabinoids), terpene profile, pesticides screen, residual solvents (for concentrates), heavy metals, microbial contamination, and water activity. If a product’s COA is missing any of those, that’s the question to ask the budtender.

Patients almost never check COAs. Pharmacists almost always do. The sample COA on a high-quality product looks boring — pesticides not detected, heavy metals not detected, microbial counts within limits. Boring is the goal.

04Batch ID and date — write them down

The batch ID tells you which specific lot the product came from. Cannabis is a biological product; even from the same brand, batch-to-batch potency and feel will vary. If something works, write down the batch ID. If something doesn’t, write that down too.

The harvest or package date matters because cannabinoids degrade over time. Flower starts losing THC and developing more sedating compounds within 6–12 months. A jar packaged 18 months ago at 22% THC may now be closer to 16%, with a noticeably different effect.

If a product is more than a year old and the dispensary doesn’t flag it, that’s a yellow flag. Ask for something fresher.

05Terpene profile — the line most people skip

Most COAs include a terpene profile next to the cannabinoid breakdown. The dominant terpene tells you more about how a strain will feel than the indica/sativa label does.

Three to remember: myrcene (sedating, the dominant terpene in most indicas), limonene (uplifting, citrus-forward), and caryophyllene (anti-inflammatory, peppery, clinically interesting because it acts on the same receptors as cannabinoids).

If you find a strain you like, look up its dominant terpene. Then look for the same dominant terpene in other strains — you’ll usually like those too.

06When the label is missing information

If you can’t find the per-serving dose, the batch ID, the date, or a way to access the COA — that’s a problem. Either the dispensary made a packaging error, or the product is operating at the edge of compliance.

Ask the budtender. A good one will pull up the COA on their tablet on the spot. A great dispensary won’t need to be asked.

If they can’t produce it, walk. Plenty of legal product on the shelf was lab-tested last week. You don’t have to take the one with question marks.