MMK Peptide LabsMMK Peptide LabsWhat the numbers mean, how to check a report is genuine, and what to be wary of.
A certificate of analysis (COA) is a lab's written result for one specific sample. It is only as useful as it is checkable. This guide walks through what each part means, how to confirm a report is real, and what should make you skeptical.
A COA records what a laboratory measured in a sample sent to it. It is not a guarantee about every vial ever made. It describes the sample named on the report, tested on the date shown, by the method listed.
| Part | What it tells you |
|---|---|
| Lab name | Who ran the test. An independent lab with its own public site can be looked up; an unnamed one cannot. |
| Test date | When the sample was analyzed. Old reports may not reflect current stock. |
| Sample / batch ID | Which sample was tested (product name, strength, batch or sample label). It must match the product you are looking at. |
| Method (HPLC, MS) | HPLC separates the components of a sample and shows them as peaks; purity is usually the main peak's share of all peaks. Mass spectrometry (MS) measures molecular mass, which helps confirm the compound's identity. |
| Purity % | The share of the analyzed material that is the target compound. It is a ratio, not an amount. |
| Measured amount vs label | Some reports also state how much compound was found per vial. Compare it with the labeled strength (for example 30 mg). Purity and amount are different questions. |
| Endotoxin (EU) | A separate test for bacterial endotoxin, reported in endotoxin units. See our endotoxin guide. |
Janoshik, the lab behind the reports MMK has posted, is based in the Czech Republic (not the US). Its reports are linked from its own site, so you can open the original page yourself.
MMK lists two third-party Janoshik reports for the RT30 sample:
How to read it: the first figure says about 99.111% of the analyzed material was the target compound. The second is a separate test, and the "<" means the result was below the level the method could report. Each link carries its own test number, and both name the RT30 sample. These results apply to that sample only. Product page: Retatrutide 30mg.
MMK has posted third-party reports only for the products listed on our lab reports page. Other products do not have a posted third-party report. Related product pages: BPC-157 10mg, Selank 10mg, Tesamorelin 10mg.
A certificate of analysis is a laboratory's written result for one specific sample, listing items such as the lab, date, sample ID, method, purity and sometimes endotoxin. It applies only to the sample named in it.
HPLC separates a sample into its components. Purity is generally the share of the main peak compared with all peaks detected. It is a percentage, not an amount, so it does not by itself tell you how much compound is in the vial.
Open it from the testing lab's own website, confirm the test number and unique code in the link, and check that the product name, strength and date match what you are buying.
No lab name, no date, an edited-looking PDF, a report for a different product or strength, a seller who will not show the report, or testing described as in-house only.
No. MMK has posted third-party Janoshik reports only for the products shown on its lab reports page.