← COA library
Safety assay / evidence ledger
Endotoxin findings, certificate by certificate.
Every published COA whose recorded endotoxin outcome explicitly says fail, detected, positive or high—organized by vendor and linked to the underlying evidence.
A finding is not a universal vendor verdict.
The result applies to the tested sample and reported assay. Borderline results are shown separately and do not count as failures. Bare numeric readings remain unclassified when their unit or applicable specification cannot be defended.
74Explicit findings
50Vendors represented
27Borderline · separate
12,809Determinate assays
Counted as a findingRecorded status explicitly says fail, detected, positive or high.
Not counted as a findingPass, low, negative, not detected and below the reporting limit.
Held outBorderline appears separately; numeric or ambiguous text remains unclassified.
01
Guangzhou Jeep Biotechnology Jeep
7 explicit31 determinate · 22.6% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-14245 |
NAD+ |
Explicit findingReported: fail |
2026-04-27 |
Janoshik |
Artifact held |
JP20260012 |
↗ |
| TL-COA-14198 |
NAD+ |
Explicit findingReported: fail |
2026-04-27 |
Janoshik |
Artifact held |
JP20260011 |
↗ |
| TL-COA-11878 |
Tirzepatide |
Explicit findingReported: detected |
2026-04-08 |
Janoshik |
Source linked |
T30 Orange Cap January 2026 |
↗ |
| TL-COA-7367 |
Not reported |
Explicit findingReported: fail |
2026-04-08 |
Janoshik |
Artifact held |
T30 Orange Cap January 2026 |
↗ |
| TL-COA-11877 |
Tirzepatide |
Explicit findingReported: detected |
2026-04-06 |
Peptide Test |
Assertion only |
Orange cap T30 jp20250616 |
↗ |
| TL-COA-14653 |
Not reported |
Explicit findingReported: detected |
2026-03-13 |
Janoshik |
Artifact held |
T30 Orange Cap January 2026 |
↗ |
| TL-COA-7366 |
Not reported |
Explicit findingReported: fail |
2026-03-13 |
Janoshik |
Artifact held |
T30 Orange Cap January 2026 |
↗ |
02
Bfflist Amo
4 explicit · 1 borderline12 determinate · 33.3% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11832 |
Tirzepatide |
Explicit findingReported: detected |
2026-02-21 |
Janoshik |
Source linked |
608045 11/20/2025 |
↗ |
| TL-COA-11806 |
Tirzepatide |
Explicit findingReported: detected |
2026-02-09 |
Janoshik |
Source linked |
608046-12/2/25 |
↗ |
| TL-COA-11771 |
Tirzepatide |
Explicit findingReported: detected |
2026-01-22 |
Janoshik |
Source linked |
608035 11/20/25 |
↗ |
| TL-COA-11129 |
Tirzepatide |
Explicit findingReported: detected |
2025-04-15 |
Janoshik |
Assertion only |
608021-2/16/25 |
↗ |
| TL-COA-11805 |
Retatrutide |
Borderline · separateReported: borderline |
2026-02-09 |
Janoshik |
Source linked |
249002-11/22/2025 |
↗ |
03
Uther Peptide
4 explicit21 determinate · 19.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-62968 |
Retatrutide |
Explicit findingReported: positive |
2026-06-06 |
LabG |
Source linked |
RE30-0509 |
↗ |
| TL-COA-14272 |
NAD+ |
Explicit findingReported: fail |
2026-04-26 |
Janoshik |
Artifact held |
Na500-1224 |
↗ |
| TL-COA-14271 |
NAD+ |
Explicit findingReported: fail |
2026-04-26 |
Janoshik |
Artifact held |
Na500-1216 |
↗ |
| TL-COA-14269 |
NAD+ |
Explicit findingReported: fail |
2026-04-26 |
Janoshik |
Artifact held |
Na500-0912 |
↗ |
04
GYC
3 explicit · 1 borderline12 determinate · 25.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11869 |
Tirzepatide |
Explicit findingReported: detected |
2026-04-01 |
Janoshik |
Source linked |
GYC2026021020 |
↗ |
| TL-COA-11951 |
Not reported |
Explicit findingReported: fail |
2026-03-10 |
Janoshik |
Artifact held |
2025121020 Black Cap |
↗ |
| TL-COA-11769 |
NAD+ |
Explicit findingReported: detected |
2026-01-20 |
Janoshik |
Source linked |
2025116500 |
↗ |
| TL-COA-11179 |
Retatrutide |
Borderline · separateReported: borderline |
2025-04-28 |
Janoshik |
Source linked |
translucent green cap 3rd GB |
↗ |
05
Zlz Peptide
3 explicit24 determinate · 12.5% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-114375 |
NAD+ |
Explicit findingReported: positive |
2026-09-24 |
LabE |
Source linked |
Not reported |
↗ |
| TL-COA-114377 |
Retatrutide |
Explicit findingReported: positive |
2026-09-23 |
LabE |
Source linked |
Not reported |
↗ |
| TL-COA-107305 |
NAD+ |
Explicit findingReported: positive |
2026-08-26 |
LabE |
Source linked |
Not reported |
↗ |
06
SPB
2 explicit · 1 borderline2 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-16478 |
NAD+ |
Explicit findingReported: detected |
2026-05-13 |
Janoshik |
Artifact held |
SJ26-4-01 |
↗ |
| TL-COA-14132 |
NAD+ |
Explicit findingReported: fail |
2026-05-13 |
Janoshik |
Artifact held |
SJ26-4-01 |
↗ |
| TL-COA-11673 |
BPC-157 |
Borderline · separateReported: borderline |
2025-11-18 |
Janoshik |
Source linked |
blue caps |
↗ |
07
Caliber
2 explicit4 determinate · 50.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-82461 |
NAD+ |
Explicit findingReported: Fail |
2026-08-14 |
Freedom Diagnostics |
Source linked |
Blue |
↗ |
| TL-COA-82460 |
Glutathione |
Explicit findingReported: Fail |
2026-08-14 |
Freedom Diagnostics |
Source linked |
Blue |
↗ |
08
Guangdong Peptide Research Biotechnology
2 explicit4 determinate · 50.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-113101 |
Tirzepatide |
Explicit findingReported: positive |
2026-08-03 |
LabG |
Source linked |
Linpgt-72026 |
↗ |
| TL-COA-113100 |
Tirzepatide |
Explicit findingReported: positive |
2026-08-03 |
LabG |
Source linked |
Frayasgct-52026 |
↗ |
09
HM PEPTIDE
2 explicit49 determinate · 4.1% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-123541 |
CJC-1295 |
Explicit findingReported: positive |
2026-10-05 |
LabE |
Source linked |
CND10 |
↗ |
| TL-COA-123537 |
TB-500 |
Explicit findingReported: positive |
2026-10-05 |
LabE |
Source linked |
AUG.16,2026 |
↗ |
10
Peptide Pole HongKong
2 explicit15 determinate · 13.3% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-113745 |
Retatrutide |
Explicit findingReported: positive |
2026-07-10 |
LabG |
Source linked |
May 30, 2026 |
↗ |
| TL-COA-62980 |
Retatrutide |
Explicit findingReported: positive |
2026-06-06 |
LabG |
Source linked |
Rt10 |
↗ |
11
Qingdao Saber Technology Pharma Qst
2 explicit8 determinate · 25.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11861 |
Retatrutide |
Explicit findingReported: detected |
2026-03-26 |
Janoshik |
Source linked |
R1025Ja014 |
↗ |
| TL-COA-11833 |
Retatrutide |
Explicit findingReported: detected |
2026-02-21 |
Janoshik |
Source linked |
R1025Ja01 |
↗ |
12
Sry Labs
2 explicit10 determinate · 20.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11261 |
Tirzepatide |
Explicit findingReported: detected |
2025-05-15 |
Janoshik |
Source linked |
Pink tops |
↗ |
| TL-COA-11167 |
Tirzepatide |
Explicit findingReported: detected |
2025-04-24 |
Janoshik |
Source linked |
SRY Green tops |
↗ |
13
Tianjin Finder Chemical Tfc
1 explicit · 1 borderline13 determinate · 7.7% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-14503 |
Retatrutide |
Explicit findingReported: positive |
2026-05-24 |
LabG |
Artifact held |
R60022026TFC |
↗ |
| TL-COA-11818 |
Tirzepatide |
Borderline · separateReported: borderline |
2026-02-12 |
Janoshik |
Source linked |
T60-12-2025 (Red cap) |
↗ |
14
1.16.19 Testing Group
1 explicit1 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-105982 |
Retatrutide |
Explicit findingReported: Fail |
2026-09-09 |
Freedom Diagnostics |
Source linked |
Not reported |
↗ |
15
Barn
1 explicit5 determinate · 20.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11856 |
Tirzepatide |
Explicit findingReported: detected |
2026-03-18 |
Janoshik |
Source linked |
K748-004 |
↗ |
16
Bfflink
1 explicit12 determinate · 8.3% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-64095 |
Tirzepatide |
Explicit findingReported: positive |
2026-06-17 |
LabG |
Source linked |
108029 |
↗ |
17
Faithful Chemical
1 explicit2 determinate · 50.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-113053 |
Retatrutide |
Explicit findingReported: positive |
2026-05-02 |
LabG |
Source linked |
Not reported |
↗ |
18
ggpeps
1 explicit2 determinate · 50.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-100997 |
Not reported |
Explicit findingReported: detected |
2026-09-02 |
Janoshik |
Artifact held |
2026061030 |
↗ |
19
Glp Keep Body Peptide
1 explicit1 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-21982 |
Retatrutide |
Explicit findingReported: positive |
2026-06-06 |
LabG |
Source linked |
(no batch ID) |
↗ |
20
Haikou Mingheng Technology
1 explicit2 determinate · 50.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-64174 |
Retatrutide |
Explicit findingReported: positive |
2026-06-16 |
LabG |
Source linked |
Not reported |
↗ |
21
Huayi Biotechnology
1 explicit2 determinate · 50.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-22021 |
Retatrutide |
Explicit findingReported: positive |
2026-06-06 |
LabG |
Source linked |
(no batch ID) |
↗ |
22
Hxnet
1 explicit9 determinate · 11.1% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-14554 |
Tirzepatide |
Explicit findingReported: positive |
2026-05-24 |
LabG |
Artifact held |
PMQI |
↗ |
23
Labratsco
1 explicit1 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-113392 |
Retatrutide |
Explicit findingReported: positive |
2026-04-17 |
LabG |
Source linked |
Not reported |
↗ |
24
Laryssa Flores
1 explicit3 determinate · 33.3% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-38799 |
Glutathione /vial |
Explicit findingReported: Fail |
2026-05-30 |
Freedom Diagnostics |
Source linked |
GLU100135 |
↗ |
25
LNP
1 explicit1 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11648 |
Tirzepatide |
Explicit findingReported: detected |
2025-10-30 |
Janoshik |
Source linked |
Unknown, @ PerchieMom |
↗ |
26
Lumira
1 explicit30 determinate · 3.3% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-113490 |
Glow |
Explicit findingReported: positive |
2026-07-20 |
LabG |
Source linked |
000262 |
↗ |
27
MandyBio
1 explicit6 determinate · 16.7% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-14542 |
Tirzepatide |
Explicit findingReported: positive |
2026-05-28 |
LabG |
Artifact held |
(no batch ID) |
↗ |
28
NYXY Pixiewood Grove
1 explicit1 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-68780 |
Biochem Api Hcg |
Explicit findingReported: Fail |
2026-07-11 |
Freedom Diagnostics |
Source linked |
HCG10K-2606-01 |
↗ |
29
Purepeptides
1 explicit5 determinate · 20.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-113814 |
Retatrutide |
Explicit findingReported: positive |
2026-09-23 |
LabE |
Source linked |
30.7.2026 |
↗ |
30
Qing Li Peptide
1 explicit19 determinate · 5.3% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-12637 |
Retatrutide |
Explicit findingReported: positive |
2026-04-22 |
LabG |
Artifact held |
Mar.2,2026 |
↗ |
31
Ray, D
1 explicit2 determinate · 50.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-62214 |
BPC-157 |
Explicit findingReported: Fail |
2025-08-15 |
Freedom Diagnostics |
Source linked |
Not reported |
↗ |
32
Reta Peptide
1 explicit36 determinate · 2.8% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-12641 |
Retatrutide |
Explicit findingReported: positive |
2026-04-22 |
LabG |
Artifact held |
March 6 2026 |
↗ |
33
Saiyan Med
1 explicit11 determinate · 9.1% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-64406 |
Retatrutide |
Explicit findingReported: positive |
2026-06-16 |
LabG |
Source linked |
SYM-RETA- B2601 |
↗ |
34
Shenzhen Jiechuang Trading
1 explicit1 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-114097 |
Tesamorelin |
Explicit findingReported: positive |
2026-06-05 |
LabG |
Source linked |
Not reported |
↗ |
35
SPB-Shanghai Synthetic Peptide Bio
1 explicit1 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-101001 |
Tirzepatide |
Explicit findingReported: detected |
2026-08-28 |
Janoshik |
Artifact held |
SN26XY-1-02 |
↗ |
36
Tsc Top Supplements China
1 explicit17 determinate · 5.9% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-3382 |
Retatrutide |
Explicit findingReported: positive |
2025-11-04 |
LabE |
Artifact held |
2381089-83-2 |
↗ |
37
Unknown
1 explicit1 determinate · 100.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-100998 |
Not reported |
Explicit findingReported: detected |
2026-08-10 |
Janoshik |
Artifact held |
2026061030 |
↗ |
38
Uwa Elite Peptides
1 explicit2 determinate · 50.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-13109 |
Tirzepatide |
Explicit findingReported: positive |
2026-05-02 |
LabG |
Artifact held |
Den |
↗ |
39
Yuansense Tech
1 explicit5 determinate · 20.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-64521 |
Retatrutide |
Explicit findingReported: positive |
2026-06-17 |
LabG |
Source linked |
Not reported |
↗ |
40
Zenith Jove Peptide Zj
1 explicit11 determinate · 9.1% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-123622 |
Retatrutide |
Explicit findingReported: positive |
2026-09-23 |
LabE |
Source linked |
RT20 |
↗ |
41
Zepeptide
1 explicit10 determinate · 10.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-64542 |
Retatrutide |
Explicit findingReported: positive |
2026-06-26 |
LabG |
Source linked |
Not reported |
↗ |
42
Penguin Peptides
0 explicit · 4 borderline7 determinate · 0.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-80481 |
Retatrutide |
Borderline · separateReported: borderline |
2026-05-20 |
Chromate |
Artifact held |
PPOWERD91KU5 |
↗ |
| TL-COA-80448 |
GHK-Cu |
Borderline · separateReported: borderline |
2026-05-20 |
Chromate |
Artifact held |
PPOWERF22CXA |
↗ |
| TL-COA-80447 |
GHK-Cu |
Borderline · separateReported: borderline |
2026-05-20 |
Chromate |
Artifact held |
35236 |
↗ |
| TL-COA-80446 |
Retatrutide |
Borderline · separateReported: borderline |
2026-05-20 |
Chromate |
Artifact held |
PPOWERD91KU5 |
↗ |
43
ACR
0 explicit · 3 borderline0 determinate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11720 |
Mazdutide |
Borderline · separateReported: borderline |
2025-12-23 |
Peptide Test |
Assertion only |
AMZ1 Maz4 Batch 1 |
↗ |
| TL-COA-11349 |
Tirzepatide |
Borderline · separateReported: borderline |
2025-06-11 |
Janoshik |
Source linked |
967284-000005 blue cap |
↗ |
| TL-COA-11058 |
Tirzepatide |
Borderline · separateReported: borderline |
2025-04-02 |
Janoshik |
Source linked |
967284-000001 |
↗ |
44
Andy Peps Studio
0 explicit · 1 borderline12 determinate · 0.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11211 |
Tirzepatide |
Borderline · separateReported: borderline |
2025-05-06 |
Janoshik |
Source linked |
Black Cap T30PWQI |
↗ |
45
BFF/AMO
0 explicit · 1 borderline0 determinate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-98774 |
Not reported |
Borderline · separateReported: borderline |
2026-07-01 |
Janoshik |
Artifact held |
309027-4/18/2026 |
↗ |
46
FSD
0 explicit · 1 borderline4 determinate · 0.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11379 |
Aod |
Borderline · separateReported: borderline |
2025-06-24 |
Janoshik |
Source linked |
May/June Promo |
↗ |
47
Lspl
0 explicit · 1 borderline4 determinate · 0.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11682 |
Tirzepatide |
Borderline · separateReported: borderline |
2025-11-25 |
Janoshik |
Source linked |
red cap |
↗ |
48
SNP
0 explicit · 1 borderline2 determinate · 0.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-10984 |
Tirzepatide |
Borderline · separateReported: borderline |
2025-03-14 |
Janoshik |
Assertion only |
TIR3002092025-10 |
↗ |
49
Tri Vial BioWorks
0 explicit · 1 borderline42 determinate · 0.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-79869 |
NAD+ |
Borderline · separateReported: borderline |
2026-02-18 |
Chromate |
Artifact held |
NAD500-0213 |
↗ |
50
Xi'an Taiye Chemical Co.
0 explicit · 1 borderline8 determinate · 0.0% finding rate
| Certificate | Compound on label | Recorded outcome | Tested | Testing lab / source | Evidence | Batch | |
|---|
| TL-COA-11888 |
Tirzepatide |
Borderline · separateReported: borderline |
2026-04-20 |
Janoshik |
Source linked |
Tirze2026120 Orange Cap |
↗ |
51
Unattributed
10 explicit · 9 borderline1698 determinate
No vendor or certificate matches that search.
Scope: published COA records with a non-empty endotoxin field. Only explicit categorical outcomes enter the failure cohort; borderline results remain separate and bare numeric values remain indeterminate. Rankings are raw event counts, not rates. Testing coverage is incomplete across labs and ingest pipelines, repeated tests can share a batch or source, and vendor attribution is only as strong as the recorded identity. Open the certificate before drawing a broader conclusion.