Check your own batch
On this page are laboratory results for individual samples. What they don’t say: what’s in the vial you have at home. Batches fluctuate, and that's what it's all about. Here's how you let that measure yourself, which four values are on the sheet at the end, and which two paths lead to it.
Why a third-party test report does not cover your batch
In the external blank test, from which the values on this page come, the same vendor once supplied a peptide with 99.8 percent purity and once a sample in which no active substance was detectable at all. Another was 619 endotoxin units per vial, while comparable samples remained below 2.
A certificate of analysis applies to the batch that has been tested. For no one else. Who wants to know what he actually has, must have the vial that stands in front of him tested.
What is on the test sheet
Four values, and each answers a different question. Most vendors only let the second check.
Salary
Is there what it says?
The actual amount of active substance in the vial is measured against the indication on the label. 100 percent means exactly hit. Less means you get too little for your money. Significantly more is not a bonus, but a dosing risk, because the deviation varies from batch to batch.
Identity and purity
Is it even the right substance, and how clean?
Mass spectrometry confirms that the molecular mass matches the specified peptide. HPLC separates what else is in the vial: shortened sequences, residues from the synthesis, foreign substances. Anything above 98 percent is considered good in this market, anything below 95 percent is conspicuous.
Endotoxin
How many bacteria are in it?
Endotoxins are fragments of dead bacteria. They survive heat and are the parameter that few vendors have tested. In the test field of this page, the measured values range from less than 1 to more than 600 units per vial, i.e. more than six hundred times apart.
Heavy metals
What is left of the production?
Lead, cadmium, mercury, arsenic. residues from raw materials and production facilities. The best finding is not detected or below the limit of quantification.
How it works
- 1
Remove the sample
An unopened vial from the batch you want to have checked. Broken vials falsify content and endotoxin.
- 2
Responsible for analysis
You choose the parameters. Grade and purity are the basic scope, endotoxin and heavy metals cost extra and are exactly the ones that no one else checks.
- 3
Shipping and waiting period
The sample goes to the laboratory, the processing takes one to three weeks depending on the load. The order from which the values on this page originate ran from 19.06.2026 to 10.07.2026.
- 4
Report with check key
You will receive a PDF and a key from which the report can be accessed from the laboratory. This key is the real value: anyone can edit a PDF uploaded, a lab address can not.
Where you can let this happen
Analysiss run through laboratories that are neither responsive nor designed for private individuals in German. The practicable path in the German-language area leads through an association that bundles the analyses for its members.
Non-profit educational association with over 2,000 members. Members receive discounted, pseudonymised laboratory analyses, plus a forum in which values are classified and experiences are shared. Settlement in German.
Affiliate link. If someone becomes a member through this path, we get a participation. This has no influence on the evaluation of the shops, the Madsen Academy does not sell peptides and is not in any ranking.
Why this page exists at all
We are not a laboratory and have neither given nor paid the order from which the external values originated. We evaluate what is publicly verifiable. This has a limit, and that is reached as soon as someone wants to know what is in his own vial.
How we evaluate and what we make money with is completely on the Methodology page. The laboratory results per vendor can be found in the Supplier overview.