QTOF-MS · ESI+ · direct infusionHPLC-UV 214 nm · channel AAcquiring · scan 1,428Scan complete · 2026-08-05 14:22 PT

The PublicRecord of thePeptideMarket.

Base peak m/z 947.28 · [M+5H]⁵⁺ · TIC 4.2e6 · lot RTT-4419Specimen — fictitious

We test research peptides on our own instruments in Mission Hills, California. Every certificate is numbered and permanent — and the ones our customers publish go to a register anyone can browse. Including the ones we withdraw.

You were handed a certificate

Verify a number.

No account · resolves against the public register

You make peptides that need testing

Order a test.

Order a test

Purity · identity · quantity · HPLC-UV/MS + QTOF-MS

Public register · open since 2026Worked example below: specimen, fictitious

How to read
the board

Result

Passes: Every vial on the certificate passed. The same filled square the certificate prints.
1 of 2 pass · Does not pass: Some vials, or none, passed. The certificate says which, and why, vial by vial.

Status

Current: The version in force, as released. The lab stands behind it.
Superseded: Replaced by a later revision under the same number. It stays readable, with the reason for the revision.
Withdrawn: No longer to be relied on. It stays public permanently, with the reason beside it.

Entered 14:22 PT

PAS-2026-4472

Retatrutide

Meridian Research Chemicals
Lot RTT-4419 · HPLC-UV / ESI-QTOF-MS

99.41 %HPLC-UV, 214 nm

Passes

10.02 mglabel 10 mg

Current2026-08-05

PAS-2026-4471

Tirzepatide

Northgate Peptide Co.
Lot TZP-2207 · HPLC-UV / ESI-QTOF-MS

98.86 %HPLC-UV, 214 nm

Passes

5.04 mglabel 5 mg

Current2026-08-05

PAS-2026-4470

BPC-157

Anteros Laboratories
Lot BPC-8830 · HPLC-UV / ESI-QTOF-MS

99.12 %HPLC-UV, 214 nm

Passes

5.01 mglabel 5 mg

Current2026-08-04

PAS-2026-4469

GHK-Cu

Solmar Bioscience
Lot GHK-1174 · HPLC-UV / ESI-QTOF-MS

97.30 %HPLC-UV, 214 nm

2 of 3 pass

47.6 mglabel 50 mg

Current2026-08-04

PAS-2026-4468

MOTS-c

Halcyon Peptides
Lot MTC-0642 · HPLC-UV / ESI-QTOF-MS

99.05 %HPLC-UV, 214 nm

Passes

10.01 mglabel 10 mg

Current2026-08-03

PAS-2026-4467

Tesamorelin

Keel & Ward Research
Lot TSM-3390 · HPLC-UV / ESI-QTOF-MS

98.44 %HPLC-UV, 214 nm

Passes

2.00 mglabel 2 mg

Current2026-08-03

PAS-2026-4466

Semaglutide

Bellweather Supply
Lot SEM-5521 · HPLC-UV / ESI-QTOF-MS

94.10 %HPLC-UV, 214 nm

Withdrawn

5.02 mglabel 5 mg

Withdrawn2026-08-01

Superseded by PAS-2026-4481 after re-analysis of a second sealed vial. This record is retained and remains publicly readable — the register does not forget.

PAS-2026-4465

TB-500

Arden Peptide Works
Lot TB5-7708 · HPLC-UV / ESI-QTOF-MS

99.28 %HPLC-UV, 214 nm

Passes

5.03 mglabel 5 mg

Current2026-07-31

PAS-2026-4464

KPV

Vireo Research Supply
Lot KPV-2065 · HPLC-UV / ESI-QTOF-MS

99.60 %HPLC-UV, 214 nm

Passes

10.00 mglabel 10 mg

Current2026-07-31

PAS-2026-4463

Ipamorelin

Coastline Bioscience
Lot IPA-1188 · HPLC-UV / ESI-QTOF-MS

99.33 %HPLC-UV, 214 nm

Passes

2.01 mglabel 2 mg

Current2026-07-30

Ten specimen rows, printed the way real records appear · a released record cannot be edited · withdrawn records stay visible

Browse the full register

PAS-2026-4472 · Retatrutide

Meridian Research Chemicals
Entered 2026-08-05 14:22 PT
Worked example · specimen, fictitious

Report No.

PAS-2026-4472

ISSUED 2026-08-05

PAGE 1 OF 1

REVISION 0 — CURRENT

Client

Meridian Research Chemicals

Chain

RECEIVED 2026-07-29

CONDITION — INTACT, SEALED; PHOTOGRAPHED ON RECEIPT

ANALYZED 2026-08-01 — 2026-08-04

RELEASED 2026-08-05 · 2:22 PM PDT

BASIS — PER VIAL

Methods & limits

a · HPLC-UV / ESI-QTOF-MS — USP/NF ⟨621⟩ Chromatography (SOP-13); LOQ 1 µg/mL

b · LAL (fluorometric) — USP/NF ⟨85⟩ Bacterial Endotoxins Test

Verify

https://premieranalytical.com/verify/PAS-2026-4472

SPECIMEN — FICTITIOUS DATA

Certificate of Analysis

INDEPENDENT ANALYTICAL LABORATORY · MISSION HILLS, CALIFORNIA

Retatrutide

CAS 2381089-83-2 · LABEL CLAIM 10 MG · CLIENT LOT RTT-4419 · 1 VIAL, NUMBERED · MATERIAL AS STATED BY CLIENT

1 OF 1 SAMPLES PASSPurity 99.41 %, content 100.2 % of the stated label claim across 1 sample, measured per vial by the methods keyed in the rail.

SAMPLE 01 · LAB NO. PAS-26-11840 · LOT RTT-4419 · RECEIVED INTACT, SEALED; PHOTOGRAPHED ON RECEIPTPASS

Purity

99.41%

HPLC-UV / ESI-QTOF-MS^a

% of label

100.2%

of 10 mg claimed

Content

10.02mg

HPLC-UV / ESI-QTOF-MS^a

Identity

CONFORMS

HPLC-UV / ESI-QTOF-MS^a

ALSO MEASURED — Bacterial endotoxins < 0.03 EU/mL^b

PHOTO 1 — AS RECEIVED

PHOTO 2 — LAB NO. AFFIXED

Released by — Donald Trujillo, Principal Chemist

released electronically; recorded on the verification register

RELEASED 2026-08-05 · 2:22 PM PDT
REVISION 0 · STATUS: CURRENT

PAS-2026-4472 · SHA-256 CA74 8454 0DF6 D2A6 E43B … · VERIFY: https://premieranalytical.com/verify/PAS-2026-4472 · PAGE 1 OF 1

Results relate only to the specific samples tested. Reproduce only in full. This certificate reports only the analyses listed, and its results are intended for research use only — the material tested is not approved for human or veterinary use, or for therapeutic, diagnostic, or clinical applications. Results should be interpreted by qualified professionals within the scope of the intended research. Accuracy and reliability of results may be influenced by sample integrity, handling, and other experimental variables. An endotoxin screen is not a sterility claim. Premier Analytical Sciences does not endorse any company or product listed in this register. A record here states what was measured, nothing more. Premier Analytical Sciences conducts its testing in accordance with ISO/IEC 17025 requirements; it is not an ISO/IEC 17025 accredited laboratory. All names, samples and values on this specimen are fictitious.

/// END OF REPORT ///

Sealed vials photographed on receipt at the laboratory — Intake photograph · as received, before the lab's own numbered sticker was applied · PAS-2026-4472 · specimen — fictitious

What this record does not establish

Anything not listed among the results — including the container closure. Sterility and endotoxin are separate assays, established only when they were ordered and appear on the certificate.
Suitability for human use. This is research material and the certificate says so.
That every other vial of this lot matches. One record describes the vials it received.
Any endorsement of the commissioning party, who paid for the analysis and cannot change it.

Chain of custody, as published

07-29 09:14Received sealedPhotographed as received, unopened
07-29 11:02Logged in & numberedAssigned lab number PAS-26-11840; the lab's own numbered sticker applied
08-01 08:40AnalyzedHPLC-UV / ESI-QTOF-MS against reference standard
08-05 14:22Released & publishedSigned, numbered, and pushed to the public register in the same action

Check the number yourself.

Integrity and quality matter most to us. That is why publishing is one-way. Type a certificate number and you land on the same record every other person holding it sees: the measured values, the method and any withdrawal, with no login, no request form, and no second version of it kept for the vendor.

Certificate number

Numbers read PAS-2026-NNNNCase-insensitiveNo account, ever

The PublicRecord of thePeptideMarket.

Verify a number.

Order a test.

How to read the board

The Register

PAS-2026-4472 · Retatrutide

Certificate of Analysis

What this record does not establish

Check the number yourself.

How to read
the board