What the Melanotan II record shows

Evidence through 2026-08-31

TitrateLab tracks 1,127 published Melanotan II certificate-of-analysis records through 2026-08-31. Across 1,126 records with a usable peptide-purity result, the median reported purity is 99.8%. Across 938 records with measured-versus-label dose data, 51% are within 10% of the labeled quantity. This is a public convenience sample, not a randomized market survey; one result describes one submitted sample and does not verify other batches.

Published records1,127
Reported purity99.8% median · 1,126 results
Dose accuracy51% within ±10% · 938 results
Endotoxin100% pass · 14 determinate results
Evidence dates2022-08-12 to 2026-08-31
Limits and missing evidence
  • The testing laboratory is unattributed on 3 records.
  • Coverage depends on reports that were published and available to ingest.
Assay metrics

Melanotan II lab-testing metrics

1,127
Certificates
99.8%
Median tested purity
95%
Certs ≥ 99% purity
5
Zero-purity certs
12
Testing labs
571
Vendors
Mean purity99.2% Below 90% purity0% Mean dose vs label+7.7% Underfilled9% Endotoxin pass100% Within 10% of label dose51% Overdosed ≥ +7%48% Underdosed ≤ −7%13%

COAs per testing lab

Top 12 of 13 labs by certificate count.

Freedom Diagnostics 743 99.8% med
Janoshik 160 99.8% med
Finnrick (Lab E) 68 99.7% med
Finnrick (Lab A) 42 99.6% med
Chromate 35 99.6% med
Finnrick (Lab B) 22 99.3% med
Finnrick (Lab D) 22 99.7% med
Finnrick (Lab G) 13 99.9% med
ILS Laboratories 6 99.7% med
Testides 5 99.7% med
Finnrick (Lab F) 4 99.7% med
Vanguard Laboratory 3 99.8% med

+ 1 more lab with fewer certificates.

Tested-purity distribution

Bins below 90% tested purity (0% of certs).

Melanotan II tested-purity distribution
Purity rangeCertificates
0–50%5
50–70%0
70–80%0
80–85%0
85–90%0
90–91%0
91–92%0
92–93%0
93–94%0
94–95%0
95–96%1
96–97%4
97–98%10
98–99%31
99–100%1075

COAs over time

Melanotan II certificates published per month.

Melanotan II certificates per month
MonthCertificates
2022-082
2022-091
2023-031
2023-051
2023-061
2023-092
2023-101
2024-012
2024-022
2024-031
2024-053
2024-063
2024-074
2024-084
2024-094
2024-103
2024-111
2024-124
2025-019
2025-0238
2025-0322
2025-0418
2025-0546
2025-0623
2025-0726
2025-0817
2025-0925
2025-1049
2025-1149
2025-1246
2026-0144
2026-0271
2026-0369
2026-0489
2026-05106
2026-06110
2026-07118
2026-08112

Most-tested vendors

Top 10 of 15 vendors by Melanotan II certificate count.

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

Verified Vendor A 🔒 18
Verified Vendor B 🔒 13
Verified Vendor C 🔒 13
Verified Vendor D 🔒 12
Verified Vendor E 🔒 12
Verified Vendor F 🔒 10
Verified Vendor G 🔒 9
Verified Vendor H 🔒 9
Verified Vendor I 🔒 8
Verified Vendor J 🔒 8

+ 5 more vendors with fewer certificates.

Published Melanotan II certificates of analysis

1127 records. Zero guesswork.

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Illustrative structure only. No record-level values are present in this preview.

More COA results by compound