Published method
HPLC identity, mg per vial and purity (peptide tests)
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COA Lab Review Article
Janoshik Analytical Review: What a Janoshik Peptide COA Actually Proves
Janoshik Analytical is the lab most often named when a research-peptide listing says "third-party tested," so the useful question is not whether the lab exists but what one of its reports actually establishes. This review reads the published test parameters, pricing and verification process directly from the lab's own service pages, then explains which claims a report supports and which it does not.
Public materials checked 2026-08-25. Details published by third parties change; verify current information at the source before relying on it.
Quick answer
Janoshik Analytical is an independent analytical laboratory whose published peptide tests report identity, amount in milligrams per vial, and purity by HPLC, with an average turnaround of 7 business days and per-test prices from $215. Every report carries a task number and unique key that can be checked on the lab's own verification page, so a report's authenticity is verifiable. The limits are worth knowing before trusting a vendor's "tested" badge: purity and fill amount are two separate numbers, and sterility, endotoxin, heavy-metal and contamination screening are priced as separate add-ons rather than included in the standard peptide test.
Published turnaround
7 business days average on the peptide tests checked
Report verification
Task number plus unique key, or the QR code on the report
Quick checklist before deeper review
- Read the amount (mg per vial) and the purity percentage as two separate results, not one score.
- Check whether the vendor's report covers the batch you were actually sent.
- Verify the report on the lab's own verification page before trusting a forwarded PDF.
- Confirm whether sterility, endotoxin or heavy-metal add-ons were purchased, since the base test excludes them.
- Check the report date, because a test describes one batch at one point in time.
Top-half signal table
| Checkpoint | Public signal in this pass | Why this matters |
|---|---|---|
| Testing method (peptides) | HPLC, published per test with target compound, CAS number and sequence | A named method makes a result independently interpretable |
| Result format | "mg per vial and peptide purity," with "m/m purity" offered as an alternative format | The two formats answer different questions and are not interchangeable |
| Report verification | First-party verification page accepting a task number and unique key; QR code printed on reports | Lets a reader confirm a forwarded report was not edited or reused |
| Scope of the base test | Sterility, endotoxin, heavy metals, contamination screening and TFA are separately priced add-ons | "Tested" on a listing does not imply a sterility or contamination result exists |
| Sample requirement | One whole unopened vial of lyophilizate, or 30 mg of raw API in a sealed glass vial | Testing consumes a unit, which shapes how often a buyer can realistically verify |
What a Janoshik peptide test actually measures
Each peptide test on the lab's public catalog publishes its own parameter block rather than a general description, listing the target compound, alternative names, CAS number, molecular weight and full amino-acid sequence alongside the analytical parameters. The values below are from the BPC-157 test page read on 2 August 2026; the DSIP test page checked the same day published an identical method, detection limit, result format, sample requirement and turnaround, so these parameters appear to be consistent across the peptide catalog rather than specific to one compound.
The practical consequence is that a peptide report answers two questions at once: is this the compound it claims to be and how much of it is in the vial, and how pure is the material that is there. Those are separate measurements with separate failure modes.
| Parameter | Published value |
|---|---|
| Testing method | HPLC |
| Detection limit cutoff | Less than 1/20th of the usual dosage per vial |
| Result format (lyophilizate) | mg per vial and peptide purity |
| Result format (alternative) | m/m purity and peptide purity |
| Minimum sample (lyophilizate) | 1 whole unopened vial |
| Minimum sample (raw API powder) | 30 mg in a sealed glass vial |
| Average turnaround time | 7 business days |
The two numbers on the report, and why one without the other means little
Purity is a percentage of the peptide material present. Amount is how many milligrams of that peptide the vial actually contains. A vial can return a high purity figure while being materially underfilled, and a correctly filled vial can return a lower purity figure. Neither number alone describes the vial.
This is why a listing that advertises only "99% pure" has quoted one of the two published results. The amount figure, expressed as milligrams per vial, is the one that governs every downstream concentration calculation. The alternative "m/m purity" format describes the mass fraction of the powder rather than the quantity in the vial, so a report in that format does not substitute for a milligram figure.
- High purity, low fill: the material is clean but there is less of it than the label states.
- Correct fill, lower purity: the quantity is right but a share of the mass is something else.
- A single advertised percentage does not distinguish between those two cases.
What the standard peptide test does not cover
The lab's own order pages list a set of separately priced additional services alongside each peptide test. Because they are optional add-ons, their absence from a report is the default rather than an anomaly, and a vendor describing a product as "lab tested" is not thereby claiming any of these results exist.
| Additional service | Published add-on price |
|---|---|
| Sterility testing | $290 |
| TFA analysis | $290 |
| LCMS screening for peptide contamination | $205 |
| Endotoxin analysis | $180 |
| CHNS mass report | $145 |
| Heavy metals analysis | $105 |
| Fentanyl presence analysis | $75 |
| Variance testing | $75 |
| pH measurement | $35 |
Published peptide test pricing
Prices below are read from the lab's public peptide catalog on 2 August 2026 and are shown to give a realistic sense of scale rather than as a current quote. Verify pricing directly before ordering, since catalogs change.
| Test | Published price |
|---|---|
| BPC-157, TB-500, Ipamorelin, PT-141, CJC-1295 (DAC or no DAC), GHRP-2, GHRP-6 | $215 |
| DSIP, GHK-Cu, Sermorelin, Tesamorelin, Thymosin Alpha-1, Selank, Semax, Epithalon | $290 |
| CJC-1295/Ipamorelin blend, BPC-157/TB-500 blend | $320 |
| Common GLP-1 blind test (semaglutide, tirzepatide, retatrutide) | $360 |
| Hexarelin, KPV, LL-37, MOTS-c, Oxytocin, Melanotan 1, Kisspeptin and other single compounds | $450 |
| GLOW blend (GHK-Cu/TB-500/BPC-157) | $500 |
| CagriSema blend (cagrilintide/semaglutide) | $630 |
| KLOW blend (GHK-Cu/TB-500/BPC-157/KPV) | $800 |
How to verify a Janoshik report you were sent
The lab publishes a verification page stating that it can be used to "verify the authenticity of any test conducted by our company." It accepts two inputs, a task number and a unique key, and the lab's order pages state that every report in its database is verifiable either through that page or via the QR code printed on the report.
This matters because the realistic failure mode in this market is not a fabricated laboratory but a real report used misleadingly: an edited PDF, a report for a different batch, or an old report presented as current. Verification addresses exactly that gap, and it is the single most useful check a buyer can perform on a document they did not commission.
- Enter the task number and unique key on the lab's verification page, or scan the QR code on the report.
- Confirm the compound and date on the verified record match the document you were sent.
- Treat an unverifiable PDF as an unverified claim, regardless of how it is presented.
- Remember that a verified report describes the batch that was submitted, not necessarily the vial you received.
Using a verified report in a research workflow
Once a report is verified, the milligrams-per-vial figure is the number that carries forward. Reconstitution math depends on the actual amount in the vial rather than the amount printed on the label, so a report that revises that figure changes every concentration derived from it.
That is the practical link between third-party testing and everyday handling: the report establishes the input, and the concentration calculation converts it into a working figure. Medibact publishes free reconstitution and concentration tools that take the milligram amount and diluent volume as inputs, and supplies the USP-grade bacteriostatic water used as that diluent.
- Take the amount in milligrams per vial from the report, not from the vial label, when they disagree.
- Recalculate concentration whenever the tested amount differs from the labeled amount.
- Keep the report reference with the batch record so the figure can be traced later.
Limits of this review
Everything above is read from the laboratory's own published pages on 2 August 2026 and describes what the lab states about its services. It is not an audit of the laboratory, an assessment of analytical accuracy, or a verification that published turnaround times are met in practice. Medibact has no affiliation with Janoshik Analytical, receives no compensation in connection with this page, and does not endorse third-party laboratories. Prices, parameters and turnaround times change; confirm current details on the lab's own site before ordering.
Comparison checklist
- Use identical document checks for every lab in the shortlist.
- Compare report readability, scope language, and communication clarity side by side.
- Record missing information as unresolved rather than inferred.
- Refresh notes on a schedule because service pages and profile signals can change.
Buyer and researcher due-diligence notes
- Capture evidence links and the date each signal was verified.
- Request current scope and timeline details directly before finalizing a shortlist.
- Keep a separate column for unknowns to avoid overconfident comparisons.
- Use review-provider and forum signals as supplemental context only.
- Record the task number of any report you verify so the check can be repeated later.
Related internal pages
FAQ
Is Janoshik testing legitimate?
Janoshik Analytical is an independent analytical laboratory that publishes per-test parameters, prices and a first-party verification page, and its own materials describe more than ten years of experience in chemical analysis. Reports carry a task number and unique key that can be checked directly on the lab's verification page, so authenticity is confirmable rather than a matter of trust. The practical risk in this market is usually not the laboratory but the document: an edited, reused or out-of-date report circulating with a product. Verify the specific report rather than relying on the lab's reputation. This review is educational and is not an endorsement.
How much does Janoshik peptide testing cost?
On the lab's public catalog checked on 2 August 2026, single-compound peptide analyses ranged from $215 for compounds such as BPC-157, TB-500, Ipamorelin and PT-141, to $290 for compounds including DSIP, GHK-Cu, Sermorelin and Tesamorelin, and $450 for a wider set of less common peptides. Blends were priced higher, from $320 for a two-peptide blend to $800 for a four-component KLOW analysis, and the common GLP-1 blind test was $360. Additional services are priced separately on top of the base test. Confirm current pricing on the lab's own site.
How long does Janoshik take to return results?
The peptide test pages checked on 2 August 2026 publish an average turnaround time of 7 business days, measured from the lab's receipt of the sample rather than from the order date. Shipping time to the laboratory is additional, and the lab states that packaging, labeling and shipping instructions are provided after an order is created and paid. Treat a published average as an estimate that can move with queue volume.
What does a Janoshik peptide COA actually tell you?
For a lyophilized peptide the published result format is the amount in milligrams per vial together with the peptide purity, measured by HPLC, against a stated detection limit of less than one twentieth of the usual amount per vial. In other words it establishes what the compound is, how much of it is present, and how pure that material is. An alternative result format reports m/m purity, which describes the mass fraction of the powder rather than the quantity in the vial, so the two formats are not interchangeable.
Does a Janoshik test prove a peptide is sterile or free of contaminants?
No. Sterility testing, endotoxin analysis, heavy metals analysis, LCMS screening for peptide contamination and TFA analysis are all listed as separately priced additional services rather than parts of the standard peptide test. A report therefore says nothing about any of them unless that specific add-on was purchased and appears on the document. A vendor describing a product as third-party tested is not, by that phrase alone, claiming a sterility or contamination result exists.
What is the Janoshik unique key and how do I use it?
The unique key is one of two inputs on the laboratory's verification page, used together with the task number to confirm that a report is genuine and unaltered. The lab also states that every report in its database can be verified through the QR code printed on the report itself. Either route confirms the document originated from the laboratory; neither confirms that the tested batch is the same batch you received, which remains a separate question for the seller.
What sample does Janoshik require for a peptide test?
The peptide test pages checked on 2 August 2026 specify one whole unopened vial of lyophilizate, or 30 mg of raw API powder in a sealed glass vial to prevent moisture absorption. Because testing consumes a unit, independent verification has a real per-batch cost, which is part of why buyer-commissioned testing is less common than vendor-published reports.
Is Medibact affiliated with Janoshik Analytical?
No. Medibact has no affiliation with Janoshik Analytical and receives no compensation in connection with this page. This review is compiled from the laboratory's own public materials as of 2 August 2026, is educational rather than a certification of laboratory performance, and does not constitute an endorsement. Medibact sells USP-grade bacteriostatic water and educational materials, and does not sell peptides or testing services.
Educational use only — not medical advice. This guide summarizes information reported in published research and community practice for educational purposes. It is not medical advice and not a recommendation to use any compound. Any doses, schedules, or combinations shown are examples of what has been reported, not instructions for you. Many peptides described here are research compounds that are not FDA-approved for the uses discussed and may be investigational or restricted. Effects, risks, and legal status vary; individual needs and results vary. Consult a qualified, licensed healthcare professional before making any decision. Do not use this content to diagnose, treat, or dose yourself.
Medibact does not endorse third-party stores or labs. This review content is educational, based on public website materials, and requires independent verification. No ranking position is a safety guarantee. Affiliate or outclick links may be added later.