Short answer: Janoshik Analytical is an independent analytical laboratory used across the research-compound sector to test the identity and purity of submitted samples. Independent means the laboratory has no commercial stake in the outcome — a supplier submits a sample, the laboratory reports what it measures, and the report can be checked against the laboratory rather than taken on the seller's word.
This article is educational and explains how third-party analytical testing works. It does not provide usage, dosing or administration guidance.
What an independent laboratory does
An analytical laboratory receives a sample, runs it through established analytical methods, and reports the measurements. For research compounds the two questions being answered are identity — is this molecule what it is said to be — and purity — what proportion of the sample is that molecule. Janoshik Analytical issues these results in a structured certificate format with a report identifier, which is what allows a result to be traced back to its source.
The laboratory does not manufacture, endorse or supply the compounds it tests. That separation is the entire point.
Why independence is the part that matters
A supplier testing its own product has an obvious incentive problem. It chooses the sample, chooses whether to publish the result, and chooses what to do with an unfavourable one. None of those choices are visible to the buyer.
Third-party testing removes two of the three. The laboratory does not adjust a result to suit the party paying for it, and the buyer can confirm the report at source. What remains within the supplier's control is which samples get submitted and which certificates get published — which is why per-batch testing, rather than occasional testing, is the meaningful commitment.
What a Janoshik report establishes — and what it does not
| The report does establish | The report does not establish |
|---|---|
| The identity of the molecule in the submitted sample | That the substance is safe |
| Its measured purity, by a stated method | That it is approved by any regulator |
| That a specific batch was tested on a specific date | That it is legal to supply or possess where you are |
| A traceable report identifier | Anything about doses, effects or outcomes in humans |
This distinction is worth stating plainly, because certificates are frequently presented as though they settle questions they cannot touch. A purity figure of 99% tells you the sample was overwhelmingly the named compound. It tells you nothing whatsoever about whether that compound is safe to put in a human body — and for most research compounds, the honest answer is that long-term human safety data does not exist.
Three phrases that are not synonyms
| Phrase | What it can mean |
|---|---|
| Lab tested | Anything at all, including a supplier testing itself, once, years ago |
| Third-party tested | Tested by a laboratory with no commercial interest in the result |
| Batch tested | Every production run is tested, not one sample representing all of them |
Marketing copy tends to blur these together. When comparing suppliers, the useful question is not whether a certificate exists but whether a certificate exists for the batch you were sent.
How we use third-party testing at Free Muscle
Identity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Testing is done per production run rather than per product line, because a certificate from a run produced two years ago tells you nothing about the pack you are holding.
We do not own the laboratory, hold any stake in it, or choose the result.
How to check the certificate for your batch
Find the batch number printed on your pack, then request the Certificate of Analysis for that specific batch number. You do not need to have bought anything to ask. Full details are on our lab testing page.
When the certificate arrives, read it using the five checks in How to Read a Certificate of Analysis — identity, purity and method, batch number, test date, and issuing laboratory.
References
- McCarthy D., Han Y., Carrick K., Schmidt D., Workman W., Matejtschuk P., Duru C., Atouf F. Reference Standards to Support Quality of Synthetic Peptide Therapeutics. Pharmaceutical Research, 2023, 40:1317–1328. DOI: 10.1007/s11095-023-03493-1
- Streuli A., Erckes V., Nardone B., Bedard V., Beland F., Steuer C. Improvement of Analysis and Transferability in Peptide Purification: From HPLC to FPLC and Back Again. Journal of Peptide Science, 2026, 32(3):e70090. DOI: 10.1002/psc.70090
Research use statement: This article is provided for educational and informational purposes only. Research compounds referenced here are intended solely for laboratory and educational use and are not for human consumption. They are not authorised medicines and have not been evaluated by the MHRA, EMA or FDA. Nothing here constitutes medical advice, diagnosis or treatment, and nothing here encourages use, dosing or administration.