Peptide COA directory and historical certificate library
Updated 2026-11-05 · PeptideTech editorial
Find the certificate behind a current supplier offer, compound by compound, then check what each test on it can and cannot show. PeptideTech compares research-peptide listings; it does not test, commission or authenticate samples. Every report below is published by the supplier or its laboratory and keeps its own date.
Further down, the historical library holds certificates recovered from the former PeptideTech storefront. They are archive records, not certificates for today’s comparison vendors or evidence of currently shipping stock.
How to check a peptide COA
Match the product name, formulation and lot number on the original certificate to the material being assessed. Check the testing laboratory, report identifier, date and methods. Where the laboratory offers verification, confirm the report directly with it. Purity, identity, quantity, endotoxin and sterility are different measurements: a result for one does not establish the others.
Archive coverage
We recovered 170 certificate links from a saved published library containing 287 links. The remaining 117 files were not available in the local archive. Original file paths are preserved for recovered reports. Archived product names and lot labels are retained as published and may contain historical inconsistencies; consult the document itself. These reports have not been independently revalidated during this migration.
Current vendor documentation
For a current purchase comparison, obtain the selling vendor’s certificate for the exact lot. Do not substitute a historical PeptideTech report or a different vendor’s report. “COA certified” alone does not identify a test, a batch or the limits of the evidence.
Archive is not the current lot
A certificate on file, in the supplier table below or in the historical library, documents the sample that laboratory tested. It does not show that the same lot is in stock now, or that other vials match. Match the lot printed on your vial to the report, and confirm the report with the issuing laboratory where it offers a lookup.
Supplier certificates by compound
Each row is a tracked supplier’s offer with the newest certificate that supplier publishes for that exact package, as read by PeptideTech’s document audit (checked Nov 4, 2026). These are vendor-published reports. PeptideTech does not test, commission or authenticate samples, and a certificate on file does not prove which lot is shipping today: ask the supplier for the report matching your lot.
Retatrutide: 17 of 20 US offers with a matched certificate · 13 current offers
| Supplier · package | Offer | Certificate | Tests printed | Readings on the report |
|---|---|---|---|---|
| Nova Peptide Supply 5mg · Vial | $59.99 current, checked 2026-11-08 | Report Oct 22, 2026 ↗ Ethos Analytics Laboratory · lot NV-P-073K | identity (HPLC retention time), purity (HPLC), net content, endotoxin, microbial limits, heavy metals, multi-vial conformity, fentanyl screen | not transcribed |
| American Peptides 10mg · Vial | $105.00 current, checked 2026-11-08 | Report Aug 17, 2026 ↗ Bioviridian Inc. · lot RETA10-0803 Lab-hosted copy ↗ | identity (MS), purity (HPLC), net content, endotoxin, heavy metals | not transcribed |
| LA Peptides 10mg · Vial | $94.99 current, checked 2026-11-03 | Report Sep 5, 2026 ↗ Bioviridian Inc. · lot 1518 | identity (MS), purity (HPLC), net content, endotoxin, sterility (USP <71>), heavy metals | 10.89 mg measured, 108.9% of label HPLC area purity 99.79% |
| Nova Peptide Supply 10mg · Vial | $99.99 current, checked 2026-11-08 | Report Aug 6, 2026 ↗ Freedom Diagnostics · lot NV-P-3FXL | identity (MS), purity (HPLC), net content, endotoxin, multi-vial conformity, appearance | not transcribed |
| American Peptides 20mg · Vial | $200.00 current, checked 2026-11-08 | Report Aug 17, 2026 ↗ Bioviridian Inc. · lot RETA20-0803 Lab-hosted copy ↗ | identity (MS), purity (HPLC), net content, endotoxin, heavy metals | not transcribed |
| LA Peptides 20mg · Vial | $169.99 current, checked 2026-11-03 | Report Sep 9, 2026 ↗ Bioviridian Inc. · lot 1518 | identity (MS), purity (HPLC), net content, endotoxin, sterility (USP <71>), heavy metals | 20.21 mg measured, 101% of label HPLC area purity 99.79% |
| Nova Peptide Supply 20mg · Vial | $179.99 current, checked 2026-11-08 | Report Aug 6, 2026 ↗ Freedom Diagnostics · lot NV-P-UPTO | identity (MS), purity (HPLC), net content, endotoxin, multi-vial conformity, appearance | not transcribed |
| American Peptides 30mg · Vial | $240.00 current, checked 2026-11-08 | Report Aug 17, 2026 ↗ Bioviridian Inc. · lot RETA30-0803 Lab-hosted copy ↗ | identity (MS), purity (HPLC), net content, endotoxin, heavy metals | not transcribed |
| LA Peptides 30mg · Vial | $229.99 current, checked 2026-11-03 | Report Oct 20, 2026 ↗ Bioviridian Inc. · lot 1918 | identity (MS), purity (HPLC), net content, endotoxin, sterility (USP <71>), heavy metals | 31.15 mg measured, 103.8% of label HPLC area purity 99.79% |
| Nova Peptide Supply 40mg · Vial | $279.99 current, checked 2026-11-08 | Report Oct 27, 2026 ↗ Ethos Analytics Laboratory · lot NV-P-Y1Y6 | identity (HPLC retention time), purity (HPLC), net content, endotoxin, microbial limits, heavy metals, multi-vial conformity, fentanyl screen | not transcribed |
| American Peptides 48mg · Vial | $300.00 current, checked 2026-11-08 | Report Jun 25, 2026 ↗ Bioviridian Inc. · lot RETA48-0616 Lab-hosted copy ↗ | identity (MS), purity (HPLC), net content, endotoxin, heavy metals | not transcribed |
| Nova Peptide Supply 50mg · Vial | $324.99 current, checked 2026-11-08 | Report Jul 10, 2026 ↗ Freedom Diagnostics · lot NV-P-8DTR | identity (MS), purity (HPLC), net content, endotoxin, multi-vial conformity, appearance | not transcribed |
| American Peptides 60mg · Vial | $400.00 current, checked 2026-11-08 | Report Aug 17, 2026 ↗ Bioviridian Inc. · lot RETA60-0803 Lab-hosted copy ↗ | identity (MS), purity (HPLC), net content, endotoxin, heavy metals | not transcribed |
| Amino Club 10mg · Vial | $69.99 not current (last checked 2026-10-14) | Listed Aug 21, 2026 ↗ lab not named on the record · lot RT0004 | identity (HPLC retention time), purity (HPLC), net content, endotoxin, sterility (rapid PCR), heavy metals, multi-vial conformity, fentanyl screen | 10.4 mg measured (mean of 10.27, 10.53, 10.4 mg), 104% of label HPLC area purity 99.86% |
| Blank Peptides 10mg · Vial | $105.00 not current (last checked 2026-09-30) | Report Aug 22, 2026 ↗ Horizon Analytical · lot DPS-7922284 | identity (MS), purity (HPLC), net content, appearance | not transcribed |
| Blank Peptides 15mg · Vial | $119.00 not current (last checked 2026-09-30) | No certificate matched to this package | — | not transcribed |
| Amino Club 20mg · Vial | $134.99 not current (last checked 2026-10-14) | Listed Jul 30, 2026 ↗ lab not named on the record · lot RT0005 | identity (HPLC retention time), purity (HPLC), net content, endotoxin, sterility (rapid PCR), heavy metals, fentanyl screen, appearance | 21.27 mg measured, 106.3% of label HPLC area purity 99.93% |
| Blank Peptides 20mg · Vial | $159.00 not current (last checked 2026-09-30) | No certificate matched to this package | — | not transcribed |
| Amino Club 30mg · Vial | $199.99 not current (last checked 2026-10-14) | Listed Jul 30, 2026 ↗ lab not named on the record · lot RT0006 | identity (HPLC retention time), purity (HPLC), net content, endotoxin, sterility (rapid PCR), heavy metals, fentanyl screen, appearance | 31.49 mg measured, 105% of label HPLC area purity 99.57% |
| Blank Peptides 30mg · Vial | $239.00 not current (last checked 2026-09-30) | No certificate matched to this package | — | not transcribed |
Readings are transcribed from the linked document; open the original before relying on a figure. “Report” dates are the issue, analysis or report date printed on the document; “Listed” dates are when the supplier’s library listed it.
What each listed test supports
| Test | Supports | Does not establish |
|---|---|---|
| Identity by mass spectrometry | The sample’s measured molecular mass matched the expected compound. | Not the amount in the vial, purity, sterility or which lot is shipping now. |
| Identity by HPLC retention time | The main peak eluted at the time of a reference standard run by that lab. | Weaker than a mass measurement: a different molecule can share a retention time. Not amount or sterility. |
| Purity (HPLC) | Share of the detected peak area belonging to the main peak (area %), under that method. | Not milligrams in the vial, not identity on its own, not endotoxin or sterility. |
| Net content / quantity | Amount of peptide measured in the tested vial (mg), against a reference. | One vial unless several are listed; not the labelled amount of other vials or lots. |
| Bacterial endotoxin (LAL) | Bacterial endotoxin level (LAL) in the tested sample. | Not sterility (live organisms) and not purity. |
| Sterility, 14-day culture (USP <71>) | No growth in a 14-day compendial culture of the tested units. | Only the units cultured; not endotoxin or identity. |
| Sterility, rapid method (PCR) | A rapid microbial screen (PCR or growth-based) of the tested units. | Not the 14-day USP <71> culture; method sensitivity differs. |
| Microbial limits (TAMC/TYMC, USP <61>/<62>) | Total aerobic and yeast/mould counts (USP <61>/<62>). | Limits on counts, not sterility. |
| Heavy metals (ICP-MS) | Measured levels of the listed elements (ICP-MS). | Only the elements listed; not organic impurities. |
| Multi-vial conformity | Readings from more than one vial of the lot were compared. | Only the vials tested. |
| Fentanyl screen | Screen for fentanyl in the tested sample. | A single-substance screen, not a general contaminant panel. |
| Appearance | Visual description of the powder or solution. | Not an analytical result. |
Current supplier COA sources
A source link records where a supplier publishes evidence. It does not authenticate a specific batch. Match the lot and report with the issuing laboratory before relying on it.
| Supplier | Offers / recent in stock | Published evidence | Independent verification |
|---|---|---|---|
| American Peptides | 79 / 59 | Supplier COA source ↗ | Not independently authenticated by PeptideTech |
| Amino Club | 63 / 0 | Supplier COA source ↗ | Not independently authenticated by PeptideTech |
| Amino USA | 105 / 98 | Supplier COA source ↗ | Not independently authenticated by PeptideTech |
| Blank Peptides | 37 / 0 | No COA page found | Not independently authenticated by PeptideTech |
| Cenexa Labs | 106 / 93 | No COA page found | Not independently authenticated by PeptideTech |
| LA Peptides | 70 / 70 | Supplier COA source ↗ | Not independently authenticated by PeptideTech |
| Nova Peptide Supply | 46 / 46 | Supplier COA source ↗ | Not independently authenticated by PeptideTech |
Search recovered certificates
1 of 170 recovered certificate links
BRO Blend (Oxytocin 5mg & PT-141 10mg)
Historical lot: BRO-6970
Open certificate — BRO-Blend-BRO-6970.pdf