You've walked into a licensed dispensary, browsed the menu, and a product has caught your eye. But when you look at the packaging, it's covered in percentages, abbreviations, and testing data that reads like a chemistry report. What does it all mean?
Understanding cannabis product labels isn't just about being an informed consumer — it's about getting better results from your purchases. The numbers on that label tell you exactly how strong a product is, what effects to expect, and whether it's been properly tested for safety. Here's how to decode every part of it.
What New York Law Requires on Cannabis Labels
New York's Office of Cannabis Management (OCM) requires specific information on every legal cannabis product sold in the state. If a product doesn't have this information, it's likely from an unlicensed source — and you should walk away.
Required label elements include:
- Product name and brand
- Net weight or volume
- Cannabinoid content — THC and CBD at minimum, measured by an accredited lab
- Batch and lot number — Ties the product to a specific production run for traceability
- Testing lab name — The independent lab that verified the product
- Harvest/manufacturing date and expiration/best-by date
- Ingredients list (for edibles, topicals, and other manufactured products)
- Allergen warnings (if applicable)
- Universal cannabis symbol — New York's standardized THC warning icon
- Health warnings — Required statements about use during pregnancy, operating vehicles, etc.
- Producer/processor license number
Understanding THC Percentage
This is the number most people look at first — and the one most often misunderstood.
THC % on Flower Labels
For cannabis flower, THC percentage tells you how many milligrams of THC are in each gram of the product. A flower labeled 20% THC contains roughly 200mg of THC per gram.
Typical ranges: Low potency = 10-15% | Medium = 15-20% | High = 20-25% | Very high = 25%+
Important: Higher THC doesn't mean "better." It means stronger psychoactive effects per dose. Many experienced consumers prefer strains in the 18-22% range because they offer a more balanced, enjoyable experience with fewer side effects (anxiety, couch-lock).
THC on Edible Labels
For edibles, THC is measured in milligrams per serving and milligrams per package. In New York, a single serving is typically 5mg THC, and a package can contain multiple servings.
Example: A package of 10 gummies at 5mg each = 50mg total THC per package.
If you're new to edibles, start with half a serving (2.5mg) and wait at least 2 hours before considering more. Read our full edibles guide.
THCa vs. THC: Why There Are Two Numbers
This confuses almost everyone. On flower labels, you'll often see something like:
Example Label Reading
THCa: 24.3% | THC: 0.8% | Total THC: 22.1%
Here's what's happening: THCa (tetrahydrocannabinolic acid) is the raw, non-psychoactive form of THC found in the living cannabis plant. It won't get you high in its natural state. When you apply heat — smoking, vaping, or baking — THCa converts to active THC through a chemical process called decarboxylation.
The conversion isn't 100% efficient. The formula labs use is:
Total THC = THC + (THCa × 0.877)
The 0.877 factor accounts for the molecular weight lost during conversion (a carbon atom and two oxygen atoms leave as CO2). So a flower with 24.3% THCa and 0.8% THC has a Total THC of about 22.1% — that's the number that best predicts how strong it will actually feel.
Rule of thumb: Look at the Total THC number. That's your best predictor of potency.
Understanding CBD Content
CBD (cannabidiol) is the second most important cannabinoid on the label. Unlike THC, CBD doesn't produce a high. It's associated with anti-inflammatory, anti-anxiety, and pain-relieving properties.
Most recreational flower in New York is THC-dominant with very low CBD (often less than 1%). But some products are specifically formulated with significant CBD content:
- CBD-dominant products (e.g., 15% CBD, 1% THC) — Minimal to no psychoactive effect. Good for anxiety, inflammation, and daily wellness.
- Balanced / 1:1 products (e.g., 10% THC, 10% CBD) — Milder high with enhanced therapeutic effects. Popular for pain management and wellness.
- THC-dominant products (e.g., 25% THC, 0.5% CBD) — Full psychoactive effect. What most people think of as "regular" cannabis.
The CBD-to-THC ratio matters because CBD modulates THC's effects. More CBD generally means a smoother, less intense experience with fewer side effects like anxiety or paranoia.
Terpene Profiles: The Flavor and Effect Layer
Not all labels include terpene data yet, but the best ones do — and it's worth seeking them out. Terpenes are the aromatic compounds that give each strain its unique smell and flavor, and they significantly influence how a strain makes you feel.
When a label lists terpene percentages, here's how to read them:
- Dominant terpene — The one listed first or with the highest percentage. This usually drives the primary effect.
- Total terpene content — Higher total terpenes (2%+) generally means more flavor and more pronounced effects.
- The top 3 terpenes — These form the strain's "fingerprint" and are the best predictor of how it will feel.
For a full breakdown of which terpenes produce which effects, read our cannabis strain guide.
Lab Testing: What Was Checked?
Every legal cannabis product in New York has been tested by an independent, state-accredited laboratory. Lab testing is what separates licensed dispensary products from unregulated street-market cannabis. Here's what labs check for:
What Labs Test For
Potency — Exact cannabinoid percentages (THC, CBD, CBN, CBG, etc.). This is what appears on the label.
Pesticides — Screening for harmful chemicals used during cultivation. Must pass below state-defined limits.
Heavy metals — Lead, arsenic, cadmium, mercury. Cannabis plants are bioaccumulators — they absorb whatever is in the soil.
Microbials — Mold, bacteria, E. coli, Salmonella. Especially important for immunocompromised consumers.
Residual solvents — For concentrates and extracts, labs check that manufacturing solvents (butane, ethanol, CO2) have been properly purged.
Mycotoxins — Toxic compounds produced by certain molds. Particularly dangerous when inhaled.
Foreign matter — Hair, insects, packaging material, or other contaminants.
A product that passes all these tests is safe for consumption. If any test fails, the entire batch is rejected and cannot be sold.
How to verify lab results
Many products include a QR code on the packaging that links directly to the Certificate of Analysis (COA) from the testing lab. Scan it with your phone camera. The COA shows the complete, detailed test results for your specific batch — not just the summary on the label.
If there's no QR code, you can usually find the COA on the brand's website using the batch number printed on your packaging.
Reading Edible Labels: Special Considerations
Edible labels have a few extra elements to pay attention to:
- Servings per package — A bag of gummies might contain 10 servings. The per-serving dose is what matters, not the whole-package dose.
- Calories and ingredients — Yes, edibles are food products and list nutritional information. Check for allergens (nuts, dairy, gluten, soy).
- Onset time — Some labels now include expected onset time. Standard edibles: 45-90 minutes. "Fast-acting" or nano-emulsified edibles: 15-30 minutes.
- Homogeneity — Reputable brands ensure THC is evenly distributed across every piece. This means each gummy in a pack should have the same dose. Cheaper products may not be consistent.
Reading Vape Labels: What to Watch For
- Extract type — Distillate (refined, often strain-specific terpenes added back), live resin (flash-frozen plant, preserves natural terpene profile), live rosin (solventless, pressed from ice hash), CO2 extract. Live resin and live rosin tend to deliver a more complex, "full-spectrum" experience.
- Cartridge compatibility — 510-thread (universal) vs. proprietary pods. Check that you have the right battery.
- Additives — Good vape products contain only cannabis extract and cannabis-derived terpenes. Avoid products with PG (propylene glycol), VG (vegetable glycerin), MCT oil, or vitamin E acetate.
Red Flags: When a Label Tells You to Walk Away
These warning signs suggest a product may be unlicensed, untested, or counterfeit:
- No testing lab listed — If there's no lab name or batch number, the product hasn't been independently verified.
- THC claims over 99% — Outside of pure distillate, this is almost certainly inaccurate.
- No universal cannabis symbol — New York requires this on all legal products.
- Packaging that mimics real food brands — "Stoney Patch Kids" or "THC Oreos" are always unlicensed products. Legitimate brands don't copy mainstream food packaging.
- No child-resistant packaging — All New York legal products must be in child-resistant containers.
- No license number — Every legal product must show the producer's OCM license number.
If you see any of these red flags, you're looking at an unregulated product. Learn more about why buying licensed matters.
Quick Reference: Your Label-Reading Checklist
5 Things to Check Before You Buy
1. Total THC — Your best measure of potency. New? Start with lower percentages (15-18% flower) or low-dose edibles (2.5-5mg).
2. CBD content — More CBD means a smoother ride. If this is your first time, a balanced THC:CBD product is a smart starting point.
3. Top terpenes — These predict the experience better than indica/sativa labels. Myrcene = relaxing, limonene = uplifting, pinene = focused.
4. Lab test info — Lab name, batch number, and QR code should all be present. Scan the QR if you want the full report.
5. License number — Confirms the product is legal and regulated by NYS. No license = no purchase.
Still Confused? We'll Walk You Through It
Labels get easier to read with practice, but you shouldn't have to figure it out alone. At Good Company, our budtenders are happy to pick up any product on the shelf and walk you through exactly what the label means — no judgement, no rush.
Visit us at 2273 Broadway on the Upper West Side (between W 81st & W 82nd Streets), a 2-minute walk from the 79th Street 1 train. Browse our menu online, or come in and ask us anything. First-time customers get 10% off.