COA results by compound

Tirzepatide COA — Verified Certificate of Analysis Results

7362 independent third-party certificates of analysis for Tirzepatide, from 10 labs across 1529 vendors (2022-12-02 to 2026-07-15).

Every Tirzepatide certificate of analysis below is from an independent third-party lab, ingested and verified by TitrateLab. The figures here are computed live from the 7362 published Tirzepatide certs in our corpus.

Assay metrics

Tirzepatide lab-testing metrics

99.8%
Median tested purity
55
Zero-purity certs
Mean purity98.9% Mean dose vs label+7.1% Endotoxin pass100% Within 10% of label dose57% Overdosed ≥ +7%50% Underdosed ≤ −7%8%

COAs per testing lab

Top 12 of 20 labs by certificate count.

Freedom Diagnostics 3,327 99.9% med
Janoshik 1,425 99.8% med
Finnrick (Lab E) 1,340 99.9% med
Finnrick (Lab G) 620 99.8% med
Peptide Test 269 99.7% med
Finnrick (Lab A) 104 99.6% med
Finnrick (Lab C) 57 99.8% med
Finnrick (Lab F) 33 99.8% med
Unattributed / lab unknown 29 99.8% med
Finnrick (Lab B) 21 99.9% med
Finnrick (Lab D) 20 99.2% med
Finnrick 9 99.9% med

+ 8 more labs with fewer certificates.

Tested-purity distribution

Bins below 90% tested purity.

Tirzepatide tested-purity distribution
Purity rangeCertificates
0–50%55
50–70%1
70–80%3
80–85%2
85–90%4
90–91%0
91–92%2
92–93%3
93–94%2
94–95%2
95–96%4
96–97%19
97–98%41
98–99%166
99–100%7056

COAs over time

Tirzepatide certificates published per month.

Tirzepatide certificates per month
MonthCertificates
2022-123
2023-021
2023-032
2023-052
2023-061
2023-087
2023-097
2023-108
2023-115
2023-127
2024-018
2024-025
2024-034
2024-0415
2024-0525
2024-0624
2024-0716
2024-0827
2024-0954
2024-1019
2024-1169
2024-1261
2025-01109
2025-02179
2025-03156
2025-04163
2025-05165
2025-06204
2025-07225
2025-08286
2025-09330
2025-10448
2025-11480
2025-12541
2026-01581
2026-02647
2026-03425
2026-04556
2026-05615
2026-06833
2026-0749

Most-tested vendors

Top 10 of 15 vendors by Tirzepatide certificate count.

See who tests most — unlock the vendor names with Pro.

Verified Vendor A 🔒 235
Verified Vendor B 🔒 197
Verified Vendor C 🔒 139
Verified Vendor D 🔒 130
Verified Vendor E 🔒 120
Verified Vendor F 🔒 94
Verified Vendor G 🔒 89
Verified Vendor H 🔒 86
Verified Vendor I 🔒 81
Verified Vendor J 🔒 70

+ 5 more vendors with fewer certificates.

Verified Tirzepatide certificates of analysis

VendorPurityDose vs labelLabTested
www.hpebio.com 99.855% — Janoshik 2026-07-15 View COA →
GYC 99.823% +9.0% G 2026-07-08 View COA →
Whatsapp:①+852-56419109 ②+44 7467 123605 99.689% +6.5% Janoshik 2026-07-08 View COA →
Vital Research 99.97% +8.8% Freedom Diagnostics 2026-07-03 View COA →
Nulevelpeptides.com 99.95% -1.8% Freedom Diagnostics 2026-07-03 View COA →
Northern Border Health 99.69% -4.4% Freedom Diagnostics 2026-07-03 View COA →
Elite Research 99.96% +7.3% Freedom Diagnostics 2026-07-03 View COA →
Delta Peps 99.98% +11.7% Freedom Diagnostics 2026-07-03 View COA →
Beta Group Buys LLC 99.52% +11.9% Freedom Diagnostics 2026-07-03 View COA →
Bee Sweet 99.94% +17.6% Freedom Diagnostics 2026-07-03 View COA →
GYC 99.877% +10.5% G 2026-07-02 View COA →
Wolverine Peptides 99.5% +2.0% Freedom Diagnostics 2026-07-02 View COA →
Rocky Top Wellness 99.87% +2.2% Freedom Diagnostics 2026-07-02 View COA →
Peptriva Research 99.91% +1.7% Freedom Diagnostics 2026-07-02 View COA →
PTA 99.9% — Freedom Diagnostics 2026-07-02 View COA →
PTA 99.87% — Freedom Diagnostics 2026-07-02 View COA →
National Science Labs, LLC 99.97% +5.4% Freedom Diagnostics 2026-07-02 View COA →
GZ Peptides 99.83% +19.5% Freedom Diagnostics 2026-07-02 View COA →
Evergreen Peptides LLC 99.93% +12.3% Freedom Diagnostics 2026-07-02 View COA →
Evergreen Peptides LLC 99.75% +6.6% Freedom Diagnostics 2026-07-02 View COA →
Encompass Peptides 99.73% +7.3% Freedom Diagnostics 2026-07-02 View COA →
Bio Jacked Supplements 99.84% +0.4% Freedom Diagnostics 2026-07-02 View COA →
Bee Sweet 99.8% -0.6% Freedom Diagnostics 2026-07-02 View COA →
Anonymous 99.849% — Janoshik 2026-07-02 View COA →
Mix Peptides 99.885% +13.8% Janoshik 2026-07-02 View COA →
MPS 99.891% — Janoshik 2026-07-02 View COA →
Anonymous 99.877% +10.9% Janoshik 2026-07-02 View COA →
Zyren Research 99.75% +17.9% Freedom Diagnostics 2026-07-01 View COA →
Vital Sculpt Labs 99.81% -9.6% Freedom Diagnostics 2026-07-01 View COA →
Trulife Peptides 99.85% -9.3% Freedom Diagnostics 2026-07-01 View COA →
Steven George 99.32% -3.8% Freedom Diagnostics 2026-07-01 View COA →
Precision Aminos 99.91% +10.0% Freedom Diagnostics 2026-07-01 View COA →
Peptide Perfection 99.87% +9.6% Freedom Diagnostics 2026-07-01 View COA →
Papi Peps 99.6% +13.0% Freedom Diagnostics 2026-07-01 View COA →
Medic 1 Spa 99.96% +2.9% Freedom Diagnostics 2026-07-01 View COA →
Kalyx labs LLC 99.86% +0.3% Freedom Diagnostics 2026-07-01 View COA →
KASH'S PEPTIDES 99.57% +17.4% Freedom Diagnostics 2026-07-01 View COA →
HelixPep 99.49% — Freedom Diagnostics 2026-07-01 View COA →
HEIR Peptides, LLC 99.61% +10.8% Freedom Diagnostics 2026-07-01 View COA →
Guangzhou Aoyu Trading Firm 99.98% +25.7% Freedom Diagnostics 2026-07-01 View COA →
FutureWell 99.97% +20.1% Freedom Diagnostics 2026-07-01 View COA →
Formal Peptides 99.91% +0.5% Freedom Diagnostics 2026-07-01 View COA →
Formal Peptides 99.74% -1.8% Freedom Diagnostics 2026-07-01 View COA →
CA RESEARCH SHOP 99.97% +9.3% Freedom Diagnostics 2026-07-01 View COA →
Axion Pept 99.95% +25.2% Freedom Diagnostics 2026-07-01 View COA →
Asher Thompson 99.78% -4.7% Freedom Diagnostics 2026-07-01 View COA →
Mix Peptides 99.504% +13.1% Janoshik 2026-07-01 View COA →
GYC 99.903% +10.4% G 2026-06-30 View COA →
Zhengzhou Depu Technology Co., Ltd 99.586% — Zhengzhou Depu Technology Co., Ltd. 2026-06-30 View COA →
DEPU Peptides 99.586% — Janoshik 2026-06-30 View COA →
Zen Aminos 99.94% +3.7% Freedom Diagnostics 2026-06-30 View COA →
Zen Aminos 99.89% -1.1% Freedom Diagnostics 2026-06-30 View COA →
Steven Bengelsdorf, MD 99.7% +25.6% Freedom Diagnostics 2026-06-30 View COA →
Popular Peptides 99.94% — Freedom Diagnostics 2026-06-30 View COA →
Nova Aminos 99.92% — Freedom Diagnostics 2026-06-30 View COA →
NODEX Corp 99.71% +7.6% Freedom Diagnostics 2026-06-30 View COA →
NODEX Corp 99.46% +4.7% Freedom Diagnostics 2026-06-30 View COA →
NODEX Corp 99.82% +13.8% Freedom Diagnostics 2026-06-30 View COA →
NODEX Corp 99.77% +11.9% Freedom Diagnostics 2026-06-30 View COA →
NODEX Corp 99.94% +12.1% Freedom Diagnostics 2026-06-30 View COA →

Showing the 60 most recent of 7362 Tirzepatide certificates.

Tirzepatide research & evidence → Verify a Tirzepatide COA → Browse vendors →

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