Genetics Verification Program

Every seed we ship has a documented genetics report.

Royal King Seeds is the only US seed bank that publishes a full Certificate of Analysis for every strain in our catalogue — cross-verified by an ISO 17025 lab and co-signed by our breeding team. Pick any strain below to see the report.

2,000+
Strains Verified
ISO 17025
Lab Accreditation
F3–F5
Stabilization Range
8 / 8
Safety Categories

What “Genetics Verified” means

Three independent verifications combine into one document for every strain we publish.

01

Stabilization

Every line on this page has been carried through at least three filial generations of phenotype-driven selection — F3, F4, F5, IBL, or BX — with twelve mother plants per cycle. This is the only way to guarantee that the seeds you grow express the genetics you bought.

02

Independent Testing

Each batch is sent under chain-of-custody to an ISO/IEC 17025-accredited cannabis lab for cannabinoid potency (HPLC-DAD), terpene profile (GC-FID), and an 8-category safety screen — pesticides, heavy metals, microbials, mycotoxins, residual solvents, foreign matter, filth, and water activity.

03

Breeder Authority

Our Master Breeder co-signs every Certificate alongside the laboratory director. The narrative on each report — selection criteria, breeding objective, cohort variation envelope — is documented by the team that bred the line, not generated from public databases.

Sample Report

What a genetics report looks like

  • Verified header with lab + brand identity, batch ID, sample ID, and chain-of-custody protocol
  • Cannabinoid profile — THCa, Δ9-THC, CBDa, CBD, CBG, CBC, CBN with LOQ values
  • Terpene profile — top 5–8 terpenes with %, mg/g, and aroma notes
  • 8-category safety panel with PASS/FAIL badges
  • Phenotype consistency bar showing cohort variation envelope
  • Stabilization status with trait-locking criteria checklist
  • Expected grow outcomes — flower time, yield, height, difficulty
  • Dual signatures: Lab Director + RKS Master Breeder co-sign
Royal King Seeds
Genetics Verification Report
Strain OG Kush Feminized
Batch OK-2026-0142
Generation F4 Stabilized
Total THC 22.4%
Terpenes
2.31%
Safety
PASS
Cohort
n=12
Verified Strains

Browse genetics reports

See all 2,000+ strains →
F5sativa

Amnesia Haze Feminized

Batch AH-2026-0817
THC
19.9%
Terps
1.82%
Pheno
Pheno #4
View Report →Heritage Reserve
IBLhybrid

OG Kush Feminized

Batch OK-2026-0890
THC
22.0%
Terps
1.73%
Pheno
Pheno #1
View Report →Core Line
F4indica

Granddaddy Purple Feminized

Batch GP-2026-0921
THC
20.7%
Terps
1.78%
Pheno
Pheno #2
View Report →Heritage Reserve
F4indica

G13 Feminized

Batch G-2026-0975
THC
22.6%
Terps
2.06%
Pheno
Pheno #6
View Report →Core Line
F3indica

Forbidden Fruit Feminized

Batch FF-2026-0878
THC
19.9%
Terps
1.69%
Pheno
Pheno #3
View Report →Core Line
F4hybrid

Fruity Pebbles Feminized

Batch FP-2026-0997
THC
20.7%
Terps
1.94%
Pheno
Pheno #6
View Report →Core Line
F4indica

Hindu Kush Feminized

Batch HK-2026-0812
THC
20.1%
Terps
1.85%
Pheno
Pheno #5
View Report →Core Line
BX1indica

A-10 Auto

Batch A-2026-0951
THC
20.5%
Terps
1.88%
Pheno
Pheno #2
View Report →Core Line
BX1sativa

Acapulco Gold Auto

Batch AG-2026-0963
THC
20.2%
Terps
1.64%
Pheno
Pheno #6
View Report →Core Line
F4hybrid

Cake Bomb Feminized

Batch CB-2026-0963
THC
1.4%
Terps
1.80%
Pheno
Pheno #4
View Report →Core Line
F4sativa

Permafrost Feminized

Batch P-2026-0847
THC
20.3%
Terps
1.98%
Pheno
Pheno #4
View Report →Core Line
F4indica

Sensi Star Feminized

Batch SS-2026-0917
THC
24.6%
Terps
1.68%
Pheno
Pheno #4
View Report →Core Line
F4indica

Afghan Hawaiian Feminized

Batch AH-2026-0864
THC
14.7%
Terps
1.81%
Pheno
Pheno #5
View Report →Core Line
BX1sativa

Crystal Coma Auto

Batch CC-2026-0989
THC
29.4%
Terps
1.88%
Pheno
Pheno #2
View Report →Core Line
F4hybrid

Cheetah Piss Feminized

Batch CP-2026-0858
THC
25.5%
Terps
1.61%
Pheno
Pheno #1
View Report →Limited Batch
BX1sativa

Red Congolese Auto

Batch RC-2026-0835
THC
17.6%
Terps
1.98%
Pheno
Pheno #2
View Report →Limited Batch
F3indica

Fresh Cookies Feminized

Batch FC-2026-0930
THC
26.0%
Terps
1.93%
Pheno
Pheno #5
View Report →Core Line
F4indica

Afghan Kush Feminized

Batch AK-2026-0959
THC
20.1%
Terps
1.80%
Pheno
Pheno #6
View Report →Core Line
F3indica

Northern Sunrise Feminized

Batch NS-2026-0998
THC
21.0%
Terps
1.57%
Pheno
Pheno #1
View Report →Core Line
F5indica

Green Goddess Feminized

Batch GG-2026-0967
THC
20.0%
Terps
1.96%
Pheno
Pheno #4
View Report →Heritage Reserve
F4indica

Purple Punch Feminized

Batch PP-2026-0987
THC
21.6%
Terps
1.54%
Pheno
Pheno #2
View Report →Core Line
BX1hybrid

Pineapple Diesel Feminized

Batch PD-2026-0867
THC
17.5%
Terps
1.96%
Pheno
Pheno #4
View Report →Core Line
F4indica

Blue Afghani Feminized

Batch BA-2026-0863
THC
19.3%
Terps
1.76%
Pheno
Pheno #4
View Report →Heritage Reserve
F5indica

Black Cherry Feminized

Batch BC-2026-0867
THC
16.5%
Terps
2.04%
Pheno
Pheno #4
View Report →Core Line

Bred, selected, stabilized — and documented.

Royal King Seeds is a working genetics company. Every strain on this page comes from our breeding floor, not a re-bagged catalogue. The reports you see here are the same documents we use internally to track phenotype consistency across cycles — published openly so you can verify what you’re buying.

RK

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