Purple Haze potency: THC, CBD and terpenes from 116 lab tests

How published THC figures compare

Strain databases publish a single figure or a range: Leafly lists 16%, High Times 16–20% and Weedmaps 13–26%, while AllBud shows 26% in its strain box and 14–19% on average in its description.^2,3,4,5 Seed sellers advertise 24% (ILGM’s product page; 20% in SeedFinder’s listing of its seeds), 19% (Zamnesia) and 15–20% (United Cannabis Seeds), and SeedFinder’s listing of Growers Choice’s version gives 5–10%.^6,7,8,9,10 In state lab results the median was 22.39%, above Leafly’s figure and the top of High Times’ range; 90% of tests came in below 26.79%, and 22.4% reached 25% or more.¹

Nevada supplied 81 of the 116 tests, so the overall median leans on it. By state: Nevada 23.72% (81 tests), Michigan 13.43% (17 tests), Washington 19.89% (16 tests); Nevada’s median is 10.29 points above Michigan’s.¹ The year with the most tests, 2020 (35), had a median of 24.61%, while 2022, with 15 tests, had 13.43%.¹

Leafly lists myrcene as the dominant terpene, then caryophyllene and limonene, and High Times names the same three.^2,3 Our 81 tests with individual terpene values, all from Nevada labs, rank limonene 0.23%, β-caryophyllene 0.17%, β-myrcene 0.16% by median.¹ Test by test the picture splits: terpinolene leads 35 of the 81 panels, yet its median is only 0.04% against a mean of 0.39%, because most of the other panels carry little of it.¹ Different labs, products and years can produce different rankings; only a batch’s own certificate describes that batch.

Published CBD figures are small: Leafly lists 0%, High Times 0–1%, Zamnesia 0–1% and United Cannabis Seeds 0.3%.^2,3,8,9 In state lab results, 61 of the 97 tests that reported CBD found none, and 1 reached 1% or more.¹

Download the data

The 116 matched tests behind this page, one row per test: state, test date, lab, product name, product type, total THC, total CBD and terpenes.

License: CC BY 4.0. Credit: “Source: Cannlytics, cannabis_results (CC BY 4.0), analysis by Official Cannabis.” The data were filtered and aggregated from the original.

Limits of this data

• Coverage is uneven. NV (81), MI (17), WA (16), MA (2) supply the 116 tests, and none come from California; Oregon and Rhode Island results carry no product names and could not be matched.
• Washington tests count only when the strain field and the product name both name the strain; 7 Washington flower results with only a generic product name were left out.
• Some labs report higher THC than others, so we publish medians and middle ranges rather than maxima. One lab supplied 29.3% of these tests (15 labs in total), and one producer accounts for 45.5% of the 99 tests that record a producer.
• Terpene medians come from 81 tests with individual terpene values, all from Nevada labs; the Michigan and Washington results report no terpenes. We matched names strictly: crosses and near-miss names (for example “Malawi x Purple Haze FECO”) are excluded and counted, and duplicate certificates are removed.