Pharaoh’s Peptide Guide

One complete checklist

10 things to look for on a COA

Read a COA in this order. First prove that the report belongs to your batch. Then separate identity, content, and purity. Finally, check whether contamination testing was actually performed.

COA checks

Confirm the report. Understand the results. Check the safety testing.

1–3

Confirm the report

Before reading a single result, make sure the document is real and belongs to the vial in front of you.

1
Trusted third-party laboratory
Look for
A real, independent testing lab with a verifiable identity and a report hosted on the lab’s actual website. Go to the lab’s site yourself and find the COA there instead of trusting a PDF supplied by the vendor.
Why it matters
Fake labs and fake PDFs exist. A report created or tested only by the vendor or manufacturer has a built-in conflict of interest. Independent third-party testing is stronger evidence, but you should still verify that the lab is real and that it actually issued the report.
2
Compound, batch, and vial
Look for
The exact compound name and a lot number that matches the vial. If the COA includes a photo or physical description, compare the vial label, cap color, and other visible details with what you have in hand.
Why it matters
A legitimate report for a different batch or a different-looking vial does not verify your product. If the photo or description does not match, stop and ask the vendor and lab to explain before relying on it.
3
Report details
Look for
A report ID, sample-received date, test date, issue date, and the complete set of pages.
Why it matters
These details create a trail you can verify and help expose recycled or cropped reports.

4–6

Understand what is in the vial

These tests answer three different questions. One result cannot replace the others.

4
Identity
Look for
A named identity method, such as mass spectrometry, and a clear match result.
Why it matters
Identity asks whether the expected compound was found. It does not tell you how much is present.
5
Peptide content
Look for
A quantitative assay showing the measured amount per sample or vial.
Why it matters
Content tells you the actual amount. A 99% purity result does not mean the vial contains the amount printed on its label.
6
Purity and raw data
Look for
The test method, numerical purity result, and supporting data such as a full chromatogram.
Why it matters
Purity describes the tested sample’s main peak. It does not establish identity, content, sterility, or endotoxin level.

7–10

Check the safety testing

For a product sold as suitable for injection, contamination testing deserves its own close look.

7
Sterility
Look for
A separate microbiological result, the method used, and a clear statement of the outcome.
Why it matters
Sterility asks whether viable contaminating microorganisms were detected. Chemical purity cannot answer that.
8
Endotoxin
Look for
A named method, acceptance limit, units, and actual numerical result for the batch.
Why it matters
Endotoxins can remain even when no living bacteria are present, so sterility testing does not replace this test.
9
Heavy metals
Look for
Individual results for relevant elemental impurities, with units, limits, and the method used.
Why it matters
A generic “heavy metals pass” line gives you very little to evaluate.
10
Method, limit, result, status
Look for
For every test, find what was tested, how it was tested, the passing limit, the actual result, and the final status.
Why it matters
The word “pass” is only useful when the underlying method, specification, and result are visible.

A few details that matter

Bonus tips for judging the safety case

A longer testing menu can look impressive, but not every line carries the same weight. Focus first on the tests that answer the biggest questions, then look at how representative the tested sample really is.

Priority

Start with purity, sterility, and endotoxin

These are three of the most important safety checks to find. Purity looks for unwanted material in the chemical sample. Sterility looks for viable microorganisms. Endotoxin testing looks for bacterial toxins that can remain even when living bacteria are not detected.

Still confirm identity and peptide content too. A clean sample is not useful if it is the wrong compound or the wrong amount.

Extra panel

Heavy metals

Heavy-metal contamination would be serious, but there is limited public evidence showing that it is a common peptide problem. Testing can still add reassurance, especially when the report lists each element, the method, the units, the limit, and the actual result.

Optional screen

Fentanyl testing

Some vendors and laboratories now offer targeted fentanyl screening. Fentanyl should never be anywhere near a peptide vial. A verified negative result can provide extra peace of mind, but it only speaks to the sample and substances covered by that specific test.

Strength of evidence

How many vials were tested?

One vial from a batch of 1,000 is weak evidence that every vial is the same. Testing more randomly selected, batch-traceable vials builds a stronger safety case.

Pharaoh’s shortlist

Trusted third-party labs

These laboratories offer peptide testing and give you a place to start when checking a COA or ordering independent analysis. A lab’s reputation does not replace checking the exact report, batch, methods, and results.