Cannabis wax tests at 60% to 90% THC by weight. Most jars on a dispensary shelf read 70% to 85%. One gram of wax at 80% THC holds about 800 mg of THC. A single dab of 30 mg holds about 24 mg.
Cannabis Wax for Beginners: A Comprehensive Guide
How Labs Measure THC Percentage
Labs use high-performance liquid chromatography (HPLC) to separate and measure cannabinoids. The machine reports two numbers: delta-9-THC and THCA. THCA is the acid form. Heat converts THCA into THC. Labels use a formula to combine them.
Total THC = delta-9-THC + (THCA × 0.877)
The 0.877 factor accounts for the mass lost when the acid group leaves the molecule. A wax with 5% delta-9-THC and 85% THCA reads as 79.5% total THC.
Potency by Wax Type
- Rosin, pressed with heat and pressure: 60% to 80%.
- Live resin, extracted from fresh frozen plant: 65% to 85%.
- Budder and crumble, butane or propane extracted: 70% to 85%.
- Shatter: 70% to 90%.
- Distillate, refined and often re-flavored: 85% to 95%.
These ranges come from product testing data. Batches vary. Two jars from the same brand can differ by 5 points or more.
What the Label Means
Legal states require total THC on the package. Rules allow a variance window, often 10% to 15%, between the labeled number and a re-test. A jar marked 80% is a claim, not an exact measure. Labs differ in method, so the same wax sent to two labs can return different numbers.
Dose Math
Milligrams of THC = grams of wax × 1000 × THC percentage as a decimal.
0.5 g at 75% = 375 mg THC. Split into 25 dabs, that is 15 mg per dab. Inhaled THC reaches the blood at an estimated 30% to 60% of the dose, so 15 mg delivers roughly 5 mg to 9 mg. Edibles and tinctures absorb at other rates. Estimates vary by user and method.
What Moves the Number
Terpenes and plant waxes take up weight but carry no THC, so high-terpene products test lower. Light, heat, and air convert THC into CBN over time. A jar left open on a warm shelf loses potency. Store wax in a sealed glass container, in the dark, near 60°F to 70°F.
Tolerance shifts the effect but not the percentage. A daily user may need more THC to reach the same result. The number on the jar stays fixed.