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The Official Cannabis collection · sheet 19No 19 · GSCTHC & terpenes

Lab data

GSC (Girl Scout Cookies) potency and lab data

The data result is median total THC of 19.72% across 567 state lab tests of GSC flower, with the middle half of results between 17.80% and 21.92%. That is a distribution of matched state-lab flower records, not a single target percentage for the name.1

19.72%median total THC
17.80%–21.92%middle half
15.50%–24.14%middle 80%
7.2%of tests at 25% THC or more
567tests · 36 labs

Beyond the median: the odds of a strong batch, how published figures hold up and more, in the GSC lab report →

THC distribution

Total THC across 567 tests

0 20 40 60 80 2–3% THC: 0 tests 3–4% THC: 0 tests 4–5% THC: 1 tests 5–6% THC: 0 tests 6–7% THC: 0 tests 7–8% THC: 1 tests 8–9% THC: 4 tests 9–10% THC: 2 tests 10–11% THC: 3 tests 11–12% THC: 3 tests 12–13% THC: 7 tests 13–14% THC: 12 tests 14–15% THC: 12 tests 15–16% THC: 20 tests 16–17% THC: 39 tests 17–18% THC: 51 tests 18–19% THC: 71 tests 19–20% THC: 80 tests 20–21% THC: 69 tests 21–22% THC: 52 tests 22–23% THC: 46 tests 23–24% THC: 33 tests 24–25% THC: 20 tests 25–26% THC: 18 tests 26–27% THC: 11 tests 27–28% THC: 4 tests 28–29% THC: 3 tests 29–30% THC: 2 tests 30–31% THC: 0 tests 31–32% THC: 2 tests 32–33% THC: 0 tests 33–34% THC: 0 tests 34–35% THC: 1 tests 35–36% THC: 0 tests 4%8%12%16%20%24%28%32%36% median 19.72% Total THC, % by weight
One-point THC bands; shaded: middle half of results. 567 flower tests, 2014-11-25 to 2024-08-06.1

THC by year

Median total THC by year of testing

16% 18% 20% 22% 24% 2018: 21.08% (105 tests) 21.1 2018 n=105 2019: 20.62% (110 tests) 20.6 2019 n=110 2020: 19.13% (78 tests) 19.1 2020 n=78 2021: 18.79% (137 tests) 18.8 2021 n=137 2022: 19.45% (64 tests) 19.4 2022 n=64 2023: 20.69% (44 tests) 20.7 2023 n=44
Median total THC per year of testing; years with fewer than 20 tests are left out (2014: 2, 2015: 4, 2016: 5, 2017: 11, 2024: 7).1

THC by state

StateTestsMedian THC
Maryland23220.68%
Nevada13418.71%
Michigan8319.71%
Washington6819.70%
Massachusetts2419.08%
Florida1024.62%

States with at least 10 tests. Labs, testing rules and sampling differ by state, so compare states with care.1

Terpene profile

GSC terpenes, median % by weight

β-Caryophyllene β-Caryophyllene: 0.52% (n=158) 0.52% n=158 Limonene Limonene: 0.23% (n=158) 0.23% n=158 α-Humulene α-Humulene: 0.18% (n=158) 0.18% n=158 Linalool Linalool: 0.15% (n=158) 0.15% n=158 β-Myrcene β-Myrcene: 0.09% (n=158) 0.09% n=158 β-Pinene β-Pinene: 0.04% (n=102) 0.04% n=102 α-Pinene α-Pinene: 0.02% (n=158) 0.02% n=158
Median share of each terpene by weight, from 158 tests that report individual terpenes. Median total terpenes: 1.41% (385 tests). Terpinolene and Ocimene had a median of zero: at least half of tests reported none.1

How GSC compares

Lab-tested THC across 16 well-known strains

16% 20% 24% Wedding Cake Wedding Cake: median 23.01%, middle half 20.25%–25.72%, 3,090 tests 23.0% n=3,090 Blueberry Blueberry: median 21.91%, middle half 18.40%–25.23%, 411 tests 21.9% n=411 Sour Diesel Sour Diesel: median 21.68%, middle half 19.00%–25.30%, 1,071 tests 21.7% n=1,071 Gelato Gelato: median 21.58%, middle half 18.91%–24.70%, 1,792 tests 21.6% n=1,792 OG Kush OG Kush: median 20.87%, middle half 18.06%–23.36%, 379 tests 20.9% n=379 Super Lemon Haze Super Lemon Haze: median 20.84%, middle half 18.41%–23.48%, 1,543 tests 20.8% n=1,543 Northern Lights Northern Lights: median 20.03%, middle half 17.28%–22.05%, 406 tests 20.0% n=406 Strawberry Cough Strawberry Cough: median 20.00%, middle half 15.88%–23.00%, 231 tests 20.0% n=231 Blue Dream Blue Dream: median 19.96%, middle half 17.62%–22.37%, 2,118 tests 20.0% n=2,118 Pineapple Express Pineapple Express: median 19.80%, middle half 17.54%–21.75%, 461 tests 19.8% n=461 Girl Scout Cookies Girl Scout Cookies: median 19.72%, middle half 17.80%–21.92%, 567 tests 19.7% n=567 Jack Herer Jack Herer: median 19.59%, middle half 17.13%–22.00%, 910 tests 19.6% n=910 Green Crack Green Crack: median 19.52%, middle half 16.79%–21.73%, 1,236 tests 19.5% n=1,236 Durban Poison Durban Poison: median 19.45%, middle half 17.33%–21.99%, 528 tests 19.4% n=528 Trainwreck Trainwreck: median 18.65%, middle half 16.67%–21.42%, 248 tests 18.6% n=248 Granddaddy Purple Granddaddy Purple: median 17.87%, middle half 15.00%–21.55%, 512 tests 17.9% n=512 Median total THC (dot) and middle half of tests (bar)
Every strain processed with the same matching rules from the same dataset.1

Published figures beside the lab results

The middle half of the matched lab results falls between 17.80% and 21.92%, and 7.2% of records are at or above 25% total THC. Those calculations come from the full matched flower dataset rather than a seller or directory listing.1

SourcePublished figureHow to read it
Leafly25% THC2A platform strain-page figure, not the state-lab median.1,2
Weedmaps18–28% THC3A platform range; compare it with the tested distribution, not as a guarantee.1,3
AllBud28% THC4A database listing; it differs from other published figures.2,3,4
DNA Genetics19–25% THC; top samples around 28%5Seller/editorial guidance that should be attributed to its publisher.5
ILGMAround 30% THC for Girl Scout Cookies Extreme Seeds6A named seed product, not a statement about every GSC-labelled flower batch.6

The project dataset reports median total THC of 19.72% across 567 state lab tests of GSC flower, with the middle half of results between 17.80% and 21.92%.1

Download the data

The 567 matched tests behind this page, one row per test: state, test date, lab, product name, product type, total THC, total CBD and terpenes.

Download CSV Read the methodology

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

  • The aggregate includes 567 matched flower tests from 10 states, dated 2014–2024; it is evidence about named records, not genetic authentication.1
  • Only Maryland (232 tests), Nevada (134 tests), Michigan (83 tests), Washington (68 tests), Massachusetts (24 tests), Florida (10 tests) have ten or more matched tests for a state-level comparison. Smaller groups are not used as a basis for broad geographic claims.1
  • 747 near-match results were excluded, including 454 flower records, so versions and related names do not silently become plain GSC. The most common excluded near-match is “Platinum GSC.”1

Sources

  1. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 5, 2026.
  2. Leafly, GSC aka Girl Scout Cookies strain information. Accessed Oct 5, 2026.
  3. Weedmaps, GSC strain page. Accessed Oct 5, 2026.
  4. AllBud, Girl Scout Cookies marijuana strain information and reviews. Accessed Oct 5, 2026.
  5. DNA Genetics, Girl Scout Cookies cannabis strain (2025-05-13). Accessed Oct 5, 2026.
  6. ILGM, Girl Scout Cookies Extreme Seeds. Accessed Oct 5, 2026.