New Zealand research peptides · stocked & dispatched in NZ Free delivery over $250 · Refer a friend, get $20 · 1–2 day NZ delivery · All prices in NZD

Testing

Certificates of analysis.

Every laboratory report we hold, published in full — the figures, the method, the dates, and the verification key where the laboratory issues one.

Purity guarantee

Test it yourself. Below 98%, full refund.

If an independent laboratory test of a sealed vial from your order shows purity below 98%, or a different compound from the one on the label, we refund what you paid for that product in full. How it works

We hold 3 reports against 38 compounds. That is the honest number, and we would rather print it than imply the range has been assayed end to end. 2 of them can be checked on the issuing laboratory’s own site; the rest carry no public lookup, which each report says.

Retatrutide

20 mg Blind test

Janoshik Analytical · test #169705

Purity
99.887%
Content measured
24.25 mg +21.2% against the 20 mg label
Batch
Not recorded on this certificate
Test performed
Common GLP-1 peptide blind test (Semaglutide, Tirzepatide and Retatrutide)
Sample received
10 July 2026
Analysis conducted
21 July 2026
Verification key
V3ABJMZCLEX4 Enter this at janoshik.com/verify/
Janoshik Analytical test report #169705 for Retatrutide
The report as Janoshik Analytical issued it. Click to open full size.

Verify on janoshik.com →

See Retatrutide

GHK-Cu

100 mg

Janoshik Analytical · test #169704

Purity
99.607%
Content measured
95.45 mg -4.5% against the 100 mg label GHK content: 79.23 mg Copper content: 16.22 mg
Batch
Not recorded on this certificate
Test performed
GHK (or GHK-Cu) analysis
Sample received
10 July 2026
Analysis conducted
20 July 2026
Verification key
3PSMTTL86LXL Enter this at janoshik.com/verify/
Janoshik Analytical test report #169704 for GHK-Cu
The report as Janoshik Analytical issued it. Click to open full size.

Verify on janoshik.com →

See GHK-Cu

MOTS-c

10 mg

MS3 Solutions · test #PP260804-24 · lab ID 26-0222-1

Purity
98.8%
Content measured
9.0 mg -10.0% against the 10 mg label
Batch
Not recorded on this certificate
Test performed
Peptide purity and quantitation by RP-HPLC at 214 nm, identity by retention time. Mass spectrometry identification was not performed.
Sample received
19 August 2026
Analysis conducted
21 August 2026
Verification key
None issued MS3 Solutions does not publish a lookup for this report — the document above is the whole of it. Ask us for the original PDF and check it with them directly.

MS3 Solutions has no public lookup for this report, so there is nothing here to click. What you can do instead is take the certificate number above to them directly — ms3solutions.co.nz.

See MOTS-c