Janoshik is an independent analytical laboratory that tests samples sent in by its customers, including research peptides, and issues a test report for each sample. A standard peptide report states the compound identified, the measured amount per vial in milligrams, and HPLC purity. Every report carries a task number and a unique key, and entering both on Janoshik's verification page returns the lab's own copy, which is how a reader confirms that a report is genuine and unaltered.
This post explains what a Janoshik report contains, which parts are measurements and which are details supplied by whoever sent the sample, how to verify one step by step, and what a verified report does and does not establish.
What Janoshik is
Janoshik Analytical describes itself as an independent testing laboratory. It accepts samples from customers worldwide, analyzes them, and delivers a digital report by email and through a customer account. Its catalog covers peptides and a range of other compounds, and it offers additional tests on request.
Three features of how it works matter when you read one of its reports:
- The customer chooses the sample. A report describes whatever physical sample the customer sent. The lab's own FAQ is explicit that it cannot issue a report without receiving a sample.
- The customer supplies the labels. The name of the sample, the client name, the stated manufacturer and the batch are details the customer provides with the order.
- Reports can be made public. Janoshik publishes a searchable list of public reports, with the note that it does not endorse, sponsor or have any affiliation with the companies, organizations or products listed.
That last point is worth taking at face value. A Janoshik report is a record of one analysis. It is not a certification of a supplier, a product line or a brand.
Janoshik is a third-party lab in the plain sense: its help center states that it does not sell any products and that its chemical analysis covers only customer-provided samples, whether a lyophilized peptide or another research chemical. That help center is published by Janoshik s.r.o., a company form used in the Czech Republic and Slovakia, and it points to Czech law for the controlled substances the lab will not accept. A report from the lab is often called a Janoshik COA, and collections of them COAs. The lab's own word is "report"; how it differs from a supplier's peptide COA is covered below.
How a sample moves through the lab
Janoshik's help center describes the path from parcel to lab report in six steps:
- Receipt. After ordering, the customer gets packing, labelling and shipping instructions. When the parcel arrives it is matched to the order by its tracking number, and each sample is given a QR code.
- Sample preparation. The sample is dissolved in a solvent to suit HPLC testing or another method of analytical chemistry.
- Analysis. The instruments generate the raw data.
- Data analysis. The analytical team interprets the data and drafts the report.
- Internal review. The figures are checked for errors before release.
- Publication. The report appears in the client account and is emailed at the same time.
Two details matter for traceability. The client name on a report defaults to "Anonymous", and the customer can edit the header details (client, sample name, manufacturer, batch number) only until the parcel is received. After that, the header is fixed, but it is still the customer's description of the tested sample.
What a standard peptide test measures
Janoshik's catalog page for a single-peptide analysis, for example its BPC-157 test, describes the standard test as "ID, amount and purity analysis", by HPLC. For a lyophilized sample the stated format is milligrams per vial and peptide purity, with an alternative format that expresses purity on a mass-per-mass basis. The minimum sample for a lyophilized product is one whole unopened vial.
| Measurement | What it answers | Standard or add-on |
|---|---|---|
| Identity | Is the named compound present? | Standard |
| Amount (mg per vial) | How much of the compound is in this vial? | Standard |
| Purity (%) | Of the related material detected, how much is the target? | Standard |
| TFA analysis | How much trifluoroacetate counter-ion is present? | Add-on |
| LC-MS screening for peptide contamination | Is another peptide present that should not be? | Add-on |
| CHNS mass report | Elemental composition by mass | Add-on |
| Endotoxin | How much bacterial endotoxin is present? | Add-on |
| Sterility | Do bacteria or fungi grow from the sample? | Add-on |
| Heavy metals | Arsenic, cadmium, lead, mercury | Add-on |
| Variance testing | Do several vials of the same batch agree? | Add-on |
The practical consequence is simple. A report shows only what was ordered. If the findings table lists an amount and a purity, then endotoxin, sterility, counter-ion content and cross-contamination were not measured on that sample, and the report says nothing about them. Absence of a line is absence of a test.
Anatomy of a report
A Janoshik test report is a single page with a fixed layout. The fields below appear on published reports, top to bottom.
| Field | What it contains | Who supplies it |
|---|---|---|
| Task number | The lab's reference number for the analysis, shown with a # | Lab |
| Testing ordered | Date the order was placed | Lab |
| Sample received | Date the sample arrived at the lab | Lab |
| Client | Name of the customer who commissioned the test | Customer |
| Sample | Free-text name of the sample, as entered by the customer | Customer |
| Manufacturer | Stated maker of the sample | Customer |
| Batch | Batch or lot designation | Customer |
| Sample description | Notes on the sample, such as whether photos are included | Varies |
| Tests requested | The analyses ordered | Order |
| Findings table | Measured amount per vial and purity, plus any add-ons | Lab |
| Comments | Any note from the analyst | Lab |
| Analysis conducted | Date the analysis was performed | Lab |
| Signature and QR code | Analyst signature; a code linking to the lab's copy | Lab |
| Unique key | A code printed at the foot, used for verification | Lab |
Read the report in two layers. The dates, the findings table and the verification details are the laboratory's own. The client, sample name, manufacturer and batch are descriptions the customer gave the lab. The lab measured the vial it received. It did not, and could not, establish from the analysis alone that the vial came from the manufacturer or batch written above the numbers.
How to verify a Janoshik report
Anyone can make a PDF that looks like a laboratory report. Verification is what separates the lab's record from a copy that has been edited or invented.
- Find the task number. It is near the top of the report, next to the heading "Task Number", shown with a # sign.
- Find the unique key. It is printed at the foot of the report, under a line directing readers to verify the test with the key.
- Open the verification page yourself. Type janoshik.com into the browser and use the Verify link in the site menu, rather than following a link supplied with the report. The page asks for two things: the task number and the unique key.
- Enter both codes. A genuine pair returns the report as the lab holds it.
- Compare field by field. Check the task number, every date, the sample name, the batch, the tests requested and each figure in the findings table against the copy you were given. A single changed digit is a failed verification.
- Check the QR code's destination if you use it. A QR code on a report should resolve to a page on janoshik.com. If it points anywhere else, rely on the manual check instead.
If the codes return nothing, or the lab's copy differs from yours, the copy you hold is not the report the lab issued.
Janoshik's own instructions add three points. The unique key is entered in capital letters. If either identifier is missing, the report is not verifiable, so a cropped COA image or a screenshot without the key should be replaced by the full version before you try to verify the report. And the lab treats a report as legitimate only if it matches the version stored in its system. A product page that says "Janoshik tested" or "third-party tested" without a task number and key gives a reader nothing to check.
What a verified report establishes, and what it does not
Verification settles authenticity. It does not settle relevance.
| A verified report establishes | A verified report does not establish |
|---|---|
| The lab issued this report, with these figures | That the tested vial came from the stated manufacturer |
| The sample received was analyzed on the stated date | That your vial is from the same batch |
| The measured amount and purity of that sample | That other vials in the batch match, unless variance testing was ordered |
| Which tests were performed | Anything about tests that were not ordered |
| How the vial was stored before or after the analysis |
Three questions connect a verified report to the material in front of you.
Is it the same lot? Match the batch or lot designation on the report with the lot number on your vial. A report on a different lot of the same compound describes different material. A certificate describes the lot that was tested and is not a claim about any other lot of the same compound.
Is it recent enough? Peptides degrade slowly even as dry powder, faster if stored warm or exposed to moisture. A report dated long before your vial was made, or on a vial kept in unknown conditions, is weaker evidence than one on fresh material.
Was the right test ordered? For identity and quantity, the standard test is informative. If your work depends on low endotoxin, absence of a second peptide, or counter-ion content, look for those specific lines.
Reading the numbers
Amount per vial. This is the measured mass of the compound in the vial, in milligrams. Compare it with the stated net content on the label. Weighing and filling small masses carries tolerance, so small deviations in either direction are normal. A large shortfall is not.
Purity. Janoshik's standard format is HPLC purity: the share of the detected related material that is the target compound. As explained in how HPLC measures peptide purity, purity is not the same as net peptide content, and a high purity figure says nothing about water or counter-ion in the powder.
Identity. The standard test confirms the named compound is present. Identity on a supplier's certificate is usually shown as a mass spectrum with an observed molecular weight, covered in how to read a peptide certificate of analysis.
Identity confirmation by mass spectrometry works by comparing the observed mass with the theoretical molecular weight of the sequence. That is how peptide identity is established for any peptide vial, whether the label says BPC-157, GHK-Cu or something else.
What "peptide purity" means here. Janoshik's help center defines peptide purity as the share of the peptide content that is the target molecule and treats the remainder as degradation products. An impurity that is not a peptide, such as water, salt or a filler, is outside that figure. The lab also says it does not report peptide purity for blends of several peptides, because the related substances of each component interfere with one another.
Endotoxin testing. The add-on uses the LAL assay to measure lipopolysaccharide. The standard reporting range is 1 to 1000 EU per vial, lower values are reported as estimates, and a separate vial is needed.
Sterility testing. The add-on is a TAMC and TYMC count, which looks for bacteria, yeast and mold after cultivation and is reported as PASS or FAIL. The lab notes that a FAIL does not show where the contamination came from.
Heavy metals screening. This add-on covers arsenic, cadmium, lead and mercury.
Independent reports and supplier certificates
An independent report and a supplier's certificate of analysis answer different questions, and neither replaces the other.
A supplier's certificate is issued for a lot, usually covers purity and identity with the underlying chromatogram and spectrum, and sometimes net peptide content, water, counter-ion or endotoxin. An independent report is commissioned by whoever sends the sample, covers that one sample, and reports only the tests that customer paid for.
When evaluating any laboratory, including an independent one, it is reasonable to ask what method was used and whether the lab is accredited to ISO/IEC 17025, the international standard that sets requirements for the competence, impartiality and consistent operation of testing and calibration laboratories.
For Anhydrolabs material, each vial carries its lot number and is supplied as a lyophilized powder in a vacuum-sealed vial, or as 10-vial kits. The certificate of analysis for a lot is available from [email protected]; send the lot number printed on the vial. A researcher who wants an independent analysis of a lot can commission one from any laboratory. The material is for in-vitro research only, as set out in the research-use statement and in what research use only means. How a vial was stored affects what any later test will find, which is why the storage and handling page and the post on lyophilized peptides matter to anyone planning to test one.
