Premier Analytical SciencesMission Hills, CaliforniaOrder a test
QTOF-MS · ESI+ · direct infusionHPLC-UV 214 nm · channel AAcquiring · scan 1,428Scan complete · 2026-08-05 14:22 PT
10050REL %20040060080010001200m/z947.28BASE PEAK · [M+5H]⁵⁺1183.62789.52

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.

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Purity · identity · quantity — HPLC-UV/MS + QTOF-MS
Public register · open since 2026All data shown: SPECIMEN — fictitious
How to read
the board
Current
In force — released, unaltered, and the version the lab stands behind.
Flagged
Released with an analyst note attached. The note is part of the record.
Withdrawn
Superseded or retracted — and still public, permanently.

Public Verification Register

Worked example — specimen, fictitious. Rows do not link.
0certificates
on the register
№Certificate serialCompound · commissioned byPurityIdentityQuantity / labelState · published
Entered 14:22 PT
01
PAS-2026-4472
Retatrutide
Meridian Research Chemicals
Lot RTT-4419 · HPLC-UV / ESI-QTOF-MS
99.41 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
10.02 mglabel 10 mg
Current2026-08-05
02
PAS-2026-4471
Tirzepatide
Northgate Peptide Co.
Lot TZP-2207 · HPLC-UV / ESI-QTOF-MS
98.86 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
5.04 mglabel 5 mg
Current2026-08-05
03
PAS-2026-4470
BPC-157
Anteros Laboratories
Lot BPC-8830 · HPLC-UV / ESI-QTOF-MS
99.12 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
5.01 mglabel 5 mg
Current2026-08-04
04
PAS-2026-4469
GHK-Cu
Solmar Bioscience
Lot GHK-1174 · HPLC-UV / ESI-QTOF-MS
97.30 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
47.6 mglabel 50 mg
Flagged2026-08-04
Analyst note — recovered quantity 4.8 % below label claim across three vials of the same lot. Purity and identity unaffected. Note travels with this record.
05
PAS-2026-4468
MOTS-c
Halcyon Peptides
Lot MTC-0642 · HPLC-UV / ESI-QTOF-MS
99.05 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
10.01 mglabel 10 mg
Current2026-08-03
06
PAS-2026-4467
Tesamorelin
Keel & Ward Research
Lot TSM-3390 · HPLC-UV / ESI-QTOF-MS
98.44 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
2.00 mglabel 2 mg
Current2026-08-03
07
PAS-2026-4466
Semaglutide
Bellweather Supply
Lot SEM-5521 · HPLC-UV / ESI-QTOF-MS
94.10 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
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.
08
PAS-2026-4465
TB-500
Arden Peptide Works
Lot TB5-7708 · HPLC-UV / ESI-QTOF-MS
99.28 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
5.03 mglabel 5 mg
Current2026-07-31
09
PAS-2026-4464
KPV
Vireo Research Supply
Lot KPV-2065 · HPLC-UV / ESI-QTOF-MS
99.60 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
10.00 mglabel 10 mg
Current2026-07-31
10
PAS-2026-4463
Ipamorelin
Coastline Bioscience
Lot IPA-1188 · HPLC-UV / ESI-QTOF-MS
99.33 %HPLC-UV, 214 nm
ConfirmedQTOF-MS
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

One record, opened.

Retatrutide · Meridian Research Chemicals · entered 2026-08-05 14:22 PT
Report No.
PAS-2026-4472
ISSUED 2026-08-05
PAGE 1 OF 3
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
Chromatograms & spectra appended per laboratory number
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-MSa
% of label
100.2%
of 10 mg claimed
Content
10.02mg
HPLC-UV / ESI-QTOF-MSa
Identity
CONFORMS
HPLC-UV / ESI-QTOF-MSa
ALSO MEASURED — Bacterial endotoxins < 0.03 EU/mLb
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 B1EA 5A7D 95FA ECC8 A919 … · VERIFY: https://premieranalytical.com/verify/PAS-2026-4472 · PAGE 1 OF 3

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 08:40AnalysedHPLC-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 exactly why publishing is one-way. Type a certificate number and you will land on the same record every other stranger holding it sees — the measured values, the analyst notes, the withdrawals — with no login, no request form, and no second version of it reserved for the vendor.

Numbers read PAS-2026-0417Case-insensitiveNo account, ever