How to Read a Peptide COA: The Real Peptides Testing Guide (2026)
Real Peptides logomark RP / 00 Trust Through Verification

The Real Peptides Promise

Don't trust a peptide company because they tell you to. Trust the ones who give you the data to verify it yourself.

The most complete guide we've built to help researchers read a COA, verify third-party lab results, and tell comprehensive testing from the bare minimum.

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Purity by HPLC
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Every
Batch Tested
01 Why this page exists

Every peptide company says they're high quality. Most say they're third-party tested. Very few actually teach you what those reports mean. That's the gap this page closes. Our goal isn't to ask for your trust — it's to help you verify the data for yourself, because informed researchers make better decisions.

02 The Real Peptides Promise

Transparency through comprehensive testing

Every batch follows a process built to give researchers as much meaningful testing information as possible — not the minimum required to make a claim.

Manufacturer Quality Testing
Independent Third-Party Testing
Purity
Identity
Sterility
Endotoxin Testing
Heavy Metal Testing
Conformity Testing
Public COAs
Ongoing Batch Testing
03 What is a COA?

A Certificate of Analysis, read out loud

A COA is the lab document that proves what's actually in the vial. Below is a real Real Peptides report from Kovera Labs — tap a marker to see what each section verifies.

LIVE REPORT · KVR-2026-5B6BB0
Real Peptides BPC-157 Certificate of Analysis by Kovera Labs
1
2
3
4
5
1Report & Batch IDTRACEABLE
Every report ties to a specific batch and report number so it can't be reused across products. This one is report KVR-2026-5B6BB0, batch BATCH-0322 — matched to the vial you receive.
2Purity99.482%
HPLC measures how much of the sample is the target peptide versus impurities. This batch tested at 99.482% against a >98% reference standard.
3Identity (LC-MS)CONFIRMED
LC-MS confirms the compound is the exact peptide on the label — right molecule, right sequence (C62H98N16O22). Identity answers "is this actually BPC-157?"
4Heavy MetalsPASS
Arsenic, cadmium, lead and mercury all screened below limit. Most brands never run this panel — it's part of the Promise on every batch.
5Independent Verification3RD-PARTY
Issued by Kovera Labs — an independent lab, not the manufacturer — with a QR code and access code to verify the report directly at koveralabs.com/verify.
See every product's live report →
04 The six tests every researcher should understand

The full panel, one card at a time

01

Purity

HPLC separates the target peptide from impurities and reports it as a percentage. Higher purity means fewer unknown byproducts in your research data.

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02

Identity

LC-MS confirms the molecule is the exact peptide claimed — correct sequence and molecular weight. Purity means nothing if the identity is wrong.

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03

Sterility

Confirms the product is free of viable microbial contamination — critical for any reconstituted research material handled in the lab.

LEARN MORE →
04

Endotoxins

Bacterial endotoxins survive sterilization and skew results. This batch screened at <0.20 EU/mL against a ≤0.5 limit (USP <85>).

LEARN MORE →
05

Heavy Metals

ICP-MS screens for lead, arsenic, cadmium and mercury from synthesis. Rarely tested by competitors — all four passed on this batch.

LEARN MORE →
06

Conformity

Verifies the finished vial matches its stated spec — net content (12.97 mg measured) and label claim hold up against the lab data.

LEARN MORE →
05 The two tests almost nobody talks about

Where inferior brands quietly stop testing

Purity gets all the attention. These two are where "third-party tested" starts to mean something — and both are on every Real Peptides report.

Test 05 — Heavy Metals

What synthesis leaves behind.

Peptide synthesis can introduce trace metals — lead, arsenic, cadmium, mercury. They don't affect purity readings, so a purity-only COA never catches them. Here's the real ICP-MS panel for BATCH-0322, every element below limit.

BPC-157 heavy metals ICP-MS analysis
// BPC-157 · HEAVY METALS (ICP-MS) · BATCH-0322
Test 04 — Endotoxins

The contamination purity can't see.

Bacterial endotoxins survive sterilization and can wreck reproducibility. This kinetic LAL assay (USP <85>) reports the actual quantitative result, not just a checkbox — below quantitation threshold, passed.

BPC-157 bacterial endotoxin LAL analysis
// BPC-157 · ENDOTOXIN (LAL, USP <85>) · BATCH-0322
06 How to verify a COA

Six checks. Do them on any brand

Tick each box as you learn it. This is the exact list on the downloadable checklist.

Third-party lab
Issued by an independent lab, not the seller.
Batch number
Report ties to a specific production batch.
Report number
Unique ID that can't be recycled across products.
Testing date
Recent enough to reflect current inventory.
Historical reports
Past batches are published, not just the newest.
Verification
A QR / access code lets you confirm it at the lab.
VERIFIED
0 / 6
07 What comprehensive testing actually looks like

Same claim. Very different report

Neither of these is "fake." One just answers far more of the questions a serious researcher should ask.

Basic COA

MINIMUM
✓Purity (HPLC)
✓Identity (LC-MS)
–Sterility
–Endotoxins
–Heavy metals
–Conformity
–Public + historical reports

Comprehensive COA

THE PROMISE
✓Purity (HPLC) — 99.482%
✓Identity (LC-MS)
✓Sterility
✓Endotoxins — LAL, USP <85>
✓Heavy metals — ICP-MS
✓Conformity — net content verified
✓Public + historical reports
Feature · Comparison

Real Peptides vs. a typical research peptide brand

Most research peptide brands say the same three words: third-party tested. The difference shows up in what they actually publish. Below is an honest, side-by-side look at how the Real Peptides Promise compares to the testing a typical research-only (RUO) brand provides. We're not naming anyone — the point isn't to call another company "bad," it's to give you a checklist for judging research peptide quality for yourself.

Testing standard
Real Peptides
Typical RUO brand
Third-party lab
Independent (Kovera Labs)
Often self-reported
Purity (HPLC)
Published, 99%+
Claimed, not always shown
Identity (LC-MS)
Every batch
Sometimes
Endotoxins (LAL, USP <85>)
Quantitative result
Rarely published
Heavy metals (ICP-MS)
All batches
Almost never
Conformity / net content
Verified per vial
Rarely checked
Historical reports
Full history kept
Latest only, or none
Batch-level testing
Every batch
Often one founding COA
Independent verification
QR + access code
Usually none

// "Typical RUO brand" reflects common practices across the research peptide market and is not a claim about any specific company. Compare any brand using the six-point checklist above.

08 Historical testing

Every batch. Newest first. Nothing deleted

Most brands publish one COA and quietly swap it. We keep the full history downloadable — so you can watch quality hold over time.

2026-06-16 · CURRENT
BPC-157 10mg · BATCH-0322Kovera · KVR-2026-5B6BB0 · Purity 99.482% · Full panel↓ COA
2026-06-16 · CURRENT
MOTS-c 10mg · BATCH-0322Kovera · KVR-2026-D22FF8 · Purity 99.348% · Full panel↓ COA
2026-05-23
BPC-157 · Heavy Metals (ICP-MS)All elements below limit · spike recovery in range↓ COA
2026-05-22
BPC-157 · Endotoxin (LAL)<0.20 EU/mL · USP <85> · PASS↓ COA
09 Live product reports

The whole catalog, each with its own paper trail

This is the library. Every peptide, its latest report, and every supporting analysis behind it.

COABPC-157 COA
BPC-157 10mg
● 99.482% · Kovera
Latest COAMetals
COAMOTS-c COA
MOTS-c 10mg
● 99.348% · Kovera
Latest COAMetals
ENDOTOXINBPC-157 endotoxin
BPC-157 · Endotoxin
● <0.20 EU/mL · PASS
View ReportFull COA
METALSMOTS-c heavy metals
MOTS-c · Heavy Metals
● ICP-MS · PASS
View ReportEndotoxin
Browse the full COA library →
The Peptide Testing Checklist
The complete framework for evaluating research peptide quality and third-party testing.

Don't try to remember all this

Take the checklist. It's free, it's one page, and it works on any brand you're evaluating.

Download the Free Checklist ▶ Watch the overview first
10 Frequently asked questions

The questions serious researchers ask

A peptide COA reports purity by HPLC, identity by LC-MS, and — depending on the panel — sterility, endotoxins, heavy metals and conformity. Read the purity percentage against its reference standard, confirm the identity matches the labeled peptide, and check the batch number, report number and issuing lab so the report can be traced and verified.
Confirm the report was issued by an independent third-party lab, check that it carries a unique report number and batch number, look at the testing date, and use any QR code or access code to verify it directly at the lab's website. Brands that publish historical reports for past batches are easier to trust.
Every batch — not once at launch. A single founding COA tells you nothing about the specific vial shipping today. Ongoing per-batch testing with a public report history is the standard to look for.
Peptide synthesis can introduce trace metals like lead, arsenic, cadmium and mercury. These don't show up on a purity test, so a purity-only COA won't catch them. Heavy metal screening by ICP-MS is needed for clean, reproducible research data — and most brands never publish it.
Conformity testing verifies that the finished vial matches its stated specification — net content, concentration and label claim — rather than only testing an isolated sample. It confirms that what you received conforms to what was promised.
Yes. Real Peptides publishes independent third-party certificates of analysis from Kovera Labs for every batch, covering purity, identity, endotoxins and heavy metals, each with a unique report number and verification code.
11 Research products that meet the promise

Now that you know what to look for

Every compound below ships with the full-panel, publicly verifiable testing described on this page. For research use only.

Explore Verified Peptides →
Real Peptides Trust Through Verification

Science they can't silence

Don't buy peptides because a company tells you to trust them. Trust the companies that give you enough data to verify their claims.

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All products are for research and development use only and are not for human consumption of any kind. Statements have not been evaluated by the US Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease. Real Peptides is a chemical supplier, not a compounding pharmacy (503A) or outsourcing facility (503B). Site access restricted to researchers 21+.
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// The framework for verifying any research peptide COA
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