35,156
Samples logged
Bureau of Record · Est. 2025Docket Vol. II
Every vial
on the record.
No exceptions.
VendorInvestigator is an independent watchdog. We buy peptides the way you do, send them to seven contract laboratories, and publish every result as a public case file — 35,156 samples across 218 subjects and counting. Case files updated 29 May 2026.
218
Subjects under watch
295
Compounds analyzed
7
Contract laboratories
File 01
Open Investigations
SIX COMPOUNDS UNDER ACTIVE REVIEWCASE #VI-2026-0687
Tirzepatide(GLP-1 and GIP agonist)
ATianjin Finder Chemical TFC
ATrusted Peptide
ARisynth Bio
Open case file
CASE #VI-2026-0133
Retatrutide(GLP-1, GIP, and GCGR agonist)
ATianjin Finder Chemical TFC
ABulk Peptide Wholesale
AParadigm Peptide
Open case file
CASE #VI-2026-0256
Semaglutide(GLP-1 agonist)
ATianjin Finder Chemical TFC
ABulk Peptide Wholesale
AInjectify
Open case file
CASE #VI-2026-0395
BPC-157(Bepecin)
ATianjin Finder Chemical TFC
AQingdao Sigma Chemical QSC
AGlbiochem (Shanghai)
Open case file
CASE #VI-2026-0805
GHK-Cu
ATianjin Finder Chemical TFC
APharma Grade Peptides
AQingdao Sigma Chemical QSC
Open case file
CASE #VI-2026-0082
Ipamorelin(GHS agonist)
ATianjin Finder Chemical TFC
APeptide Partners
AInjectify
Open case file
File 02
The Rap Sheet
LOWEST MEAN SCORES · MIN. 10 SAMPLESBuyer advisorySubjects below repeatedly shipped product that diverged from label claims under laboratory analysis.
| № | Subject | Verdict | Samples | Mean | Worst | Last seen |
|---|---|---|---|---|---|---|
| 01 | Peptides For SaleCASE #VI-2026-0614 | UNDER REVIEW | 21 | 3.1 D | 2.0 | 20 Mar 2025 |
| 02 | Peptide GurusCASE #VI-2026-0854 | UNDER REVIEW | 45 | 3.6 D | 0.0 | 3 Jul 2025 |
| 03 | DeuschemCASE #VI-2026-0004 | UNDER REVIEW | 29 | 4.1 C | 0.0 | 6 Nov 2025 |
| 04 | Peptides 4 ResearchCASE #VI-2026-0511 | UNDER REVIEW | 20 | 4.3 C | 3.1 | 21 May 2025 |
| 05 | Coastal PeptidesCASE #VI-2026-0958 | UNDER REVIEW | 26 | 4.7 C | 0.0 | 28 Mar 2025 |
| 06 | Amplified AminoCASE #VI-2026-0748 | UNDER REVIEW | 12 | 4.9 C | 2.2 | 19 Feb 2025 |
Full standings for all 218 subjects in the Subject Index →
File 03
Latest Filings
MOST RECENT LAB RETURNS
20 Aug 2026
#VI-2026-0177
AmbioPharm
A
875 samples on file
19 Aug 2026
#VI-2026-0387
SinoPep
A
894 samples on file
19 Aug 2026
#VI-2026-0143
PolyPeptide Group
A
882 samples on file
19 Aug 2026
#VI-2026-0829
Sigma-Aldrich
A
878 samples on file
19 Aug 2026
#VI-2026-0142
Thermo Fisher Scientific
A
877 samples on file
19 Aug 2026
#VI-2026-0091
Asymchem
A
871 samples on file
18 Aug 2026
#VI-2026-0860
GenScript Peptides
A
892 samples on file
File 04
How the Bureau Works
Acquire
Samples arrive by anonymous market purchase and community intake. Chain of custody is logged from the moment a parcel is opened.
Submit evidence →Analyze
Each vial is blind-coded and dispatched to contract labs for a full work-up — purity, potency, heavy metals, bacterial endotoxins and sterility. No subject knows which lab holds its sample.
Read the methods →Publish
Scores from 0–10 are entered into the public record, verdicts are stamped, and batch numbers become checkable by anyone.
Verify a batch →
File 05
The Laboratory Battery
EVERY SAMPLE · SIX ASSAYSFull panelPurity is only the first question. A vial that passes purity can still fail on toxic metals, pyrogens, or sterility — so the bureau runs all six and files each result on its own.
| Assay | What it catches | Method | Standard |
|---|---|---|---|
| Identity | Wrong or substituted molecule | LC-MS | Mass confirmation |
| Purity | Impurities & degradation products | HPLC-UV | USP · 98% floor |
| Potency / content | Under- or over-dosed vs. label | HPLC | ±5% target |
| Heavy metals | Lead, arsenic, cadmium, mercury | ICP-MS | USP <232>/<233> |
| Bacterial endotoxins | Pyrogens — fever & reactions | LAL | USP <85> · EU/mg |
| Sterility & bioburden | Live bacterial / fungal growth | Culture | USP <71> |
A subject that clears purity but fails an elemental-impurity or endotoxin check is flagged in the record — the panel is reported assay by assay, never averaged into a single number that hides a safety failure. Read the full methods →