The Official Cannabis Independent strain guides
The Official Cannabis collection · sheet 19No 19 · GSCLab report

Lab report · 567 tests

GSC lab report

For GSC, the terpene result is more settled than the THC cutoffs: β-caryophyllene was first in 90% of terpene tests, and the flower set drops from 46% at the 20% cutoff to 7.2% at the 25% cutoff.1

Key findings

  1. Terpene results for GSC: β-caryophyllene led 90% of tests, while limonene led 6.3%.1
  2. The THC tail narrowed fast for GSC: the at-or-above share was 46% at 20% total THC, 7.2% at 25% and 0.5% at 30%.1
  3. 58% of Maryland tests met or exceeded 20% total THC, compared with 22% in Nevada.1
  4. GSC ranked 38th of 58 by median THC, yet its middle-half span of 4.12 points ranked 8th narrowest of 52 strains.1
  5. The figure from ILGM (Girl Scout Cookies Extreme), around 30%, was met or exceeded by 0.5% of GSC tests, far above the lab median of 19.72%.1,2
  6. Menu snapshot: 173 store listings carried GSC flower across 14 of 27 markets, putting it 30th among 58 strains we track.3

How often does GSC clear THC cutoffs?

In 567 flower tests, GSC hit the 20% mark or higher in 46% of results, then dropped to 7.2% for 25% and 0.5% for 30%.1

The state split was wide: Maryland logged 58% at 20% or higher across 232 tests with a median of 20.68%, while Nevada logged 22% across 134 tests and a median of 18.72%.1 Growers, labs and state rules all vary, so that spread is a market signal as well as a plant signal.

Share of GSC flower tests at or above each THC level
Total THCTests at or aboveShare of tests
15% or more52292%
18% or more41273%
20% or more26146%
22% or more14025%
25% or more417.2%
28% or more81.4%
30% or more30.5%

567 tests. Source: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

Chance of 20% THC or more, by state (states with 30+ tests)
StateTestsMedian THCShare at 20% or more
Maryland23220.68%58%
Washington6819.70%47%
Michigan8319.71%47%
Nevada13418.72%22%

Do published THC numbers line up with GSC labs?

Across the five published THC entries we checked, the single figures ran high against GSC's lab median: three of three were above 19.72%, and the highest, around 30% from ILGM (Girl Scout Cookies Extreme), was met or exceeded by 0.5% of tests.1,2

Leafly's 25% single figure was met or exceeded by 7.2% of tests, still a small share.1,4 The published ranges fit more of the lab spread: 18–28% from Weedmaps covered 71%, while 19–25% from DNA Genetics covered 53%.1,5,6

These comparisons are not batch guarantees; a jar's certificate of analysis is the batch document.

Published THC figures for GSC against 567 lab tests
SourcePublished figureTests at or above itTests inside the rangeWhere it sits
Weedmaps518–28%73%71%covers most tests
DNA Genetics (seller)619–25%60%53%covers most tests
Leafly425%7.2%—top tenth of tests
AllBud728%1.4%—top tenth of tests
ILGM (Girl Scout Cookies Extreme) (seller)2around 30%0.5%—top tenth of tests

"Tests at or above" counts results at or above the figure (for a range, its lower end). Lab data: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

Which terpene usually leads in GSC?

GSC's terpene subset was lopsided: β-caryophyllene held the top spot in 90% of 158 tests, leaving limonene with 6.3% and β-myrcene with 3.2% as much smaller leaders.1

Leafly names Caryophyllene as GSC's lead terpene, and the tests agree: β-caryophyllene led 90% of them.1,4

Most of the terpene subset came from Nevada: 134 of 158 tests, so the lead shares mostly reflect flower tested there.1

The most abundant terpene in each GSC test
TerpeneTests where it ledShare of tests
β-caryophyllene14290%
Limonene106.3%
β-myrcene53.2%
α-humulene10.6%

158 tests with at least five individual terpenes reported. Source: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

Which strains look chemically closest to GSC?

For GSC, the nearest terpene-profile neighbors were Grease Monkey at 93%, Cheetah Piss at 92% and Animal Face at 90%; at the far end of the 36-strain pool, Durban Poison had the lowest overlap at 32%.1

The close group had β-caryophyllene as its lead terpene, while Durban Poison had terpinolene.1

Method: we start with each strain's median values across eight terpenes, recast them as parts of that strain's eight-terpene total, and measure the shared portion with GSC; identical mixes score 100. The comparison pool requires 30 or more individual-terpene reports per strain, and the result is a lab-chemistry match, not a forecast of how either strain feels.

Strains whose median terpene mix overlaps most with GSC's
StrainOverlapLead terpene (by median)Tests with terpenes
Grease Monkey93%β-caryophyllene55
Cheetah Piss92%β-caryophyllene142
Animal Face90%β-caryophyllene157
Candyland88%β-caryophyllene421
Gushers87%β-caryophyllene74
Durban Poison (least similar)32%Terpinolene236

GSC: 158 tests with individual terpenes. Source: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

Where does GSC rank for THC?

GSC is a middle-third THC strain in this set: its 19.72% median ranked 38th of 58, between Pineapple Express at 19.80% and Gelato 45 at 19.65%.1 By the 25% cutoff, 7.2% of tests met or exceeded it, putting GSC 39th of 58.1

GSC's results were tighter than usual: from the 17.80% lower quartile to the 21.92% upper quartile, the middle-half width was 4.12 points, the 8th narrowest among 52 strains with at least 30 tests.1

GSC and its neighbors by median lab-tested THC
RankStrainMedian THCMiddle halfTests
36thBlue Dream19.96%17.62%–22.37%2,118
37thPineapple Express19.80%17.54%–21.75%461
38thGirl Scout Cookies (this strain)19.72%17.80%–21.92%567
39thGelato 4519.65%18.12%–21.26%53
40thJack Herer19.59%17.13%–22.00%910

Same dataset and matching rules for every strain: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

How much do labs shift GSC THC results?

For GSC, qualifying labs did not cluster tightly: among 9 labs with 20 or more tests, medians ranged from 17.11% at Lab I (Nevada) to 21.57% at Lab F (Maryland), with a spread of 4.46 points.1

Inside Maryland, the same-name spread remained: 4 qualifying labs posted medians from 18.54% up to 21.57%, separated by 3.03 points.1

A lab median also reflects which growers sent material there, so these gaps do not show that any single lab reads high. We anonymize labs on this page, with Lab A the largest source; the downloadable test file gives the lab names.

Median THC of GSC by testing lab (labs with 20+ tests)
LabStateTestsMedian THCShare at 20% or more
Lab AMaryland9321.49%69%
Lab BMaryland6720.57%55%
Lab CNevada6518.59%12%
Lab DNevada4919.46%43%
Lab EMaryland3818.54%26%
Lab FMaryland3421.57%71%
Lab GMassachusetts2419.08%42%
Lab HMichigan2120.20%57%
Lab INevada2017.11%0%

9 of 38 labs tested GSC 20+ times. Lab A has the most tests. Source: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

Does higher-THC GSC carry more terpenes?

Mostly yes: in 385 GSC tests with both measures, the top THC third, starting at 21.29%, had 1.48% median total terpenes; the bottom third, capped at 18.67%, had 1.31%, leaving a gap of 0.17 points.1

By state, the pattern split: Maryland's lower-THC third had 1.22% median total terpenes versus 1.49% in its higher-THC third, and among states with at least 30 paired tests, 1 of 2 matched the overall direction, with Maryland up and Nevada down.1 Total terpenes are aroma compounds measured by weight; they do not say how GSC will feel to anyone.

Median total terpenes in the lowest- and highest-THC thirds of GSC tests
Tests fromTestsLowest-THC thirdHighest-THC third
All states3851.31%1.48%
Maryland2271.22%1.49%
Nevada1341.36%1.21%

Tests reporting both total THC and total terpenes. Source: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

Is GSC testing stronger over time?

Across usable years, GSC was essentially flat: median total THC was 21.08% in 2018 on 105 tests and 20.69% in 2023 on 44 tests, for −0.39 points overall.1

With Maryland held constant, the direction was lower: the 2018 median was 21.79%, versus 19.89% in 2020, for −1.90 points.1 The all-state line changes with the mix of states that had enough tests in each year.

We exclude years below 20 tests.

Median THC of GSC by year (years with 20+ tests)
YearTestsMedian THC
201810521.08%
201911020.62%
20207819.13%
202113718.79%
20226419.45%
20234420.69%

Source: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

What forms and names reach labs as GSC?

Under the exact GSC label, flower made up 67% of 920 lab results; concentrates accounted for 20%, with 9.7% as shake and trim and 2.7% as other or unrecorded.1 This site's figures use the flower subset only.

Longer names were common enough to separate: 747 results had extra words around GSC, 45% of all results containing the name, led by “Platinum GSC” (85), “Flower - Platinum GSC” (83) and “GSC Thin Mints #5” (46).1 Because extra wording, cross markers and CBD versions may point to different material, we exclude them under our name-matching rules.

Lab results sold under exactly the name GSC, by product form
FormResultsShare
Flower61467%
Concentrates18620%
Shake and trim899.7%
Pre-rolls60.7%
Other or unrecorded252.7%

All product types, counted before de-duplication. Source: Cannlytics cannabis_results (CC BY 4.0), analysis by Official Cannabis.1

The most common longer names that contain GSC (excluded)
Name on the lab resultResults
Platinum GSC85
Flower - Platinum GSC83
GSC Thin Mints #546
Thin Mint GSC41
Platinum Girl Scout Cookies36
Platinum Girl Scout Cookie23

How easy and costly is GSC flower on menus?

In the Weedmaps snapshot, GSC flower landed in the middle of the tracked set: with each market searched out to 50 miles from its center, we counted 173 store listings in 14 of 27 markets, ranked 30th of 58 strains on Oct 5, 2026.3

For median exact-eighth prices, GSC was lower than the local comparison in two of two markets: Los Angeles posted $17.50 for GSC versus $25.00 for the typical same-menu strain, and New York posted $32.00 versus $36.08.3

Median price of an eighth of GSC next to other strains, same market
MarketGSC (priced eighths)Typical other strainDifference
Los Angeles, CA$17.50 (51)$25.00 (39 strains)−$7.50
New York, NY$32.00 (41)$36.08 (37 strains)−$4.08

Markets where GSC and at least 3 other strains each had 10+ priced exact eighths. "Typical other strain" is the median of the other strains' medians. Source: Weedmaps public menus, snapshot Oct 5, 2026.3

What this data cannot tell you

  • These 567 flower tests are for products labeled GSC across 10 states during 2014–2024; they do not verify any specific jar, whose certificate of analysis is the batch record.1
  • Everything here is a chemistry measurement; none of it can tell you how GSC will feel to you.

Check the numbers

The downloadable file contains the 567 flower tests behind our lab calculations; menu counts and prices are separate Weedmaps data, and the same test file feeds our THC and terpene tables.1

We build the cross-strain summaries for 58 strains with the same rules, and the network side-by-side report shows the comparisons together.1

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

Sources

  1. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 5, 2026.
  2. ILGM, Girl Scout Cookies Extreme Seeds. Accessed Oct 5, 2026.
  3. Weedmaps listings, compiled by Official Cannabis, Weedmaps flower menu snapshot, 27 US markets, Oct 5, 2026. Accessed Oct 5, 2026.
  4. Leafly, GSC aka Girl Scout Cookies strain information. Accessed Oct 5, 2026.
  5. Weedmaps, GSC strain page. Accessed Oct 5, 2026.
  6. DNA Genetics, Girl Scout Cookies cannabis strain (2025-05-13). Accessed Oct 5, 2026.
  7. AllBud, Girl Scout Cookies marijuana strain information and reviews. Accessed Oct 5, 2026.