Is CertikLabs a Janoshik alternative?

CertikLabs is an independent third-party peptide testing lab, in the same general category as Janoshik Analytical. Both labs run RP-HPLC purity and mass-spectrometry identity on submitted samples. CertikLabs differs in three structural ways: every report is anchored to a public blockchain (SHA-256 hash on-chain), every batch has a permanent public verification URL, and the workflow is built for brands that want vial-to-report traceability via QR rather than for ad-hoc individual submissions.

Is Janoshik a legitimate peptide testing lab?

Janoshik Analytical is an established independent testing laboratory with a long track record in the research-peptide community. This page is a feature comparison, not a quality judgment — both labs are structurally third-party.

What does CertikLabs offer that a Janoshik PDF does not?

Three things. First, on-chain anchoring: the SHA-256 hash of every report is written to a public blockchain at issuance, so anyone holding the PDF can verify it was not altered without trusting CertikLabs. Second, a permanent public verification URL per batch that anyone can open without an account. Third, vial-level integration — a QR code on the vial resolves to the verification page, so the report travels with the product.

Are CertikLabs reports comparable to Janoshik reports?

Both labs report identity by mass spectrometry and purity by RP-HPLC, which are the two methods that matter most for a research peptide. Numbers from any two labs are only directly comparable when the methods (column, gradient, detection) are equivalent — this is true of any cross-lab comparison, not specific to these two labs. CertikLabs publishes its methods on every report so they can be checked against any other lab's report.

Can a brand list a CertikLabs verification on its product page?

Yes. Every CertikLabs batch has a permanent verification URL and a drop-in badge component that brands embed on product pages. Buyers click through to the public verification page and can independently recompute the on-chain hash. See the Docs page for the embed snippet.

Which lab should I use?

If you are an individual buyer wanting an independent second opinion on a single sample you already hold, either lab will give you that. If you are a brand or manufacturer wanting every batch to ship with a publicly verifiable, tamper-evident anchor that buyers can confirm without trusting you or the lab, CertikLabs is built for that workflow.

Where is each lab based, and does jurisdiction matter?

Janoshik Analytical is based in the European Union (Slovakia). CertikLabs is based in the United States, ISO/IEC 17025-accredited, cGMP-aligned, and registered with CLIA and the DEA. Jurisdiction matters for two practical reasons: which regulator a lab answers to, and shipping logistics for samples. For US-based brands shipping samples domestically, a US lab is faster and avoids customs holds; for EU researchers, the inverse applies. Neither jurisdiction is inherently more credible.

What is on-chain anchoring and why should I care?

On-chain anchoring means the SHA-256 hash of the signed PDF report is written to a public blockchain at the moment of issuance. The hash is a 64-character fingerprint that changes if a single byte of the PDF changes. Anyone who downloads the PDF can recompute the hash locally and compare it against the on-chain record — if they match, the PDF is byte-for-byte the one the lab issued. The point is that authenticity no longer depends on trusting CertikLabs, the vendor, or any intermediary; the public ledger is the source of truth.

How fast is turnaround at each lab?

CertikLabs targets 5–7 business days for standard panels with an expedite option for time-sensitive batches; submission status is visible in the customer console. Janoshik Analytical's published turnaround is in the order of weeks and depends on the current queue and the assays requested. Both labs publish current turnaround on their respective sites, and you should confirm at the time of submission rather than relying on this page.

How much does each lab cost?

CertikLabs publishes per-assay and per-batch pricing on its Pricing page, plus volume programs for brands shipping continuous batches. Janoshik Analytical prices per panel and publishes its rate sheet on its own site. This page deliberately does not quote competitor prices because they change frequently and any number quoted here would go stale; check both sites directly when comparing.

Can I get raw chromatograms and mass-spec data, not just a summary?

Both labs include the chromatogram and mass-spectrum traces in their PDF reports rather than a single pass/fail line, which is the floor for any credible third-party report. CertikLabs additionally exposes the same chromatogram on the public verification page so a buyer can inspect the trace without needing the PDF in hand.

Does either lab test for endotoxins, residual solvents, or microbial load?

Both labs offer extended assays on request. CertikLabs runs LAL endotoxin, water content (Karl Fischer), counter-ion, and residual-solvent screens as add-ons to the standard purity + identity panel. Janoshik Analytical also offers extended assays per request. The standard panel at both labs is RP-HPLC purity plus mass-spectrometry identity.

Comparison · Independent peptide testing

Janoshik vs CertikLabs

Both labs run RP-HPLC purity and mass-spectrometry identity on research peptides. They differ in deliverable, tamper-evidence, and how the report reaches the buyer. This is a factual, side-by-side comparison — not a ranking.

Published Jun 10, 20268 min readEditorial standard: methods and deliverables only

Summary

Janoshik Analytical

EU-based independent testing lab with a long track record in the research-peptide community. Standard deliverable is a signed PDF report covering RP-HPLC purity and ESI-MS identity for the sample submitted.

CertikLabs

US-based independent testing lab. Standard deliverable is a signed PDF plus a permanent public verification URL whose SHA-256 hash is anchored to a public blockchain at issuance. Built for brand integration via QR-on-vial and embeddable badges.

Feature-by-feature comparison

Drawn from the two labs' public-facing documentation as of Jun 10, 2026. If anything here is out of date, write to hello@certiklabs.com and it will be corrected.

Feature

CertikLabs

Janoshik Analytical

Independence from manufacturer / seller
Both labs are structurally third-party. This is the floor, not a differentiator.
CertikLabs
Yes — CertikLabs does not manufacture or sell peptides.
Janoshik
Yes — Janoshik Analytical operates as an independent testing laboratory.
Core analytical methods
CertikLabs
RP-HPLC purity, LC-MS / LC-HRMS identity, quantitative concentration, water content (Karl Fischer), counter-ion, LAL endotoxin on request.
Janoshik
RP-HPLC purity and ESI-MS identity on every report; concentration / mass-balance available; additional assays on a per-request basis.
Per-batch Certificate of Analysis
CertikLabs
Yes — every report names the specific batch / lot it covers.
Janoshik
Yes — reports are issued against the specific sample submitted.
Public, permanent verification URL per batch
CertikLabs
Yes — every batch resolves to a permanent /verify/{id} page that anyone can open without an account.
Janoshik
No — reports are delivered as PDF to the requester, who chooses whether to share them.
Tamper-evidence beyond a PDF signature
CertikLabs
Yes — each report is SHA-256 content-hashed and the hash is anchored to a public blockchain at issuance. Recomputable by anyone.
Janoshik
Signed PDF only. Authenticity rests on trust in the issuing lab.
Vial-to-report traceability for buyers
CertikLabs
QR code on the vial / outer packaging resolves directly to the verification page for that batch.
Janoshik
Not part of the standard workflow — buyers receive the PDF the vendor chooses to share.
Who can submit samples
CertikLabs
Brands, manufacturers, group buys, and individual buyers can submit; brand verification programs run on a continuous schedule.
Janoshik
Open to individuals and vendors submitting samples directly to the lab.
Turnaround
Both labs publish current turnaround on their respective sites; always confirm at the time of submission.
CertikLabs
Standard 5–7 business days; expedite available. Status visible in the customer console.
Janoshik
Published guidance is in the order of weeks depending on queue and panel.
Brand integration
CertikLabs
Drop-in verified badge for product pages, REST API, signed webhooks, scheduled batch programs.
Janoshik
Reports are delivered to the submitter; integration into a brand site is left to the brand.
Jurisdiction
CertikLabs
United States — ISO/IEC 17025-accredited, cGMP-aligned, CLIA- and DEA-registered.
Janoshik
European Union (Slovakia).
Use case fit
CertikLabs
Brands that want every SKU to ship with a publicly verifiable, tamper-evident anchor that survives screenshots.
Janoshik
Researchers and individual buyers who want an independent second opinion on a peptide they already hold.

Where the two labs overlap

The core analytical question for any research peptide is the same regardless of who runs it: is the molecule in the vial what the label claims (identity), and what fraction of the dry mass is that molecule (purity, content)? Both Janoshik Analytical and CertikLabs answer these questions with the same family of techniques — reverse-phase HPLC for purity, electrospray mass spectrometry for identity — because those are the methods that have settled out as the standard for peptide characterization.

Both labs also share the most important structural property: independence. Neither manufactures or sells the peptides they test. That structural independence is what makes their reports more credible than a vendor-issued COA from the same shop that synthesised the material. (For why that matters, see why third-party peptide testing matters.)

Where they differ

The differences are not in the chemistry — they are in the deliverable. A Janoshik report is a signed PDF that the requester receives by email; whether that PDF reaches the eventual buyer of the peptide is the requester's problem. A CertikLabs report is also a signed PDF, but it ships with two additional artifacts: a permanent public verification URL that anyone can open without an account, and an on-chain hash that lets anyone holding the PDF independently confirm it was not altered.

The practical consequence: a Janoshik report is excellent evidence for the person who commissioned it. A CertikLabs report is designed to be evidence for everyone downstream of the vial — the buyer scanning the QR on the box, the affiliate writing a review, the regulator pulling a sample two years later. That is the workflow CertikLabs is built for.

On methods, both labs publish the column, gradient, and detection settings on each report, so a competent third party can confirm a number against any other accredited lab.

Which to pick

If you are an individual buyer and you want a one-off independent read on a vial you already hold, either lab will give you that. Pick by jurisdiction, shipping convenience, and current turnaround. Both will tell you whether the molecule is what the label claims and how pure it is.

If you are a brand or manufacturer and you want every batch you ship to be verifiable by anyone, anywhere, without trusting you or the lab, the CertikLabs deliverable — permanent verification URL + on-chain hash + QR-on-vial — is built for that. It is the difference between "we tested this" and "anyone can confirm we tested this".

If you are evaluating a vendor's quality claims as a third party (affiliate, reviewer, regulator), the existence of a public verification URL is the single highest-signal feature, because it removes the need to take the vendor's word that any report exists at all. More on that diagnostic here.

Editorial note

CertikLabs publishes this comparison because “janoshik alternative” is one of the highest-intent search queries in the independent peptide-testing space, and an answer written by us is more useful than an answer written by neither of us. The page is restricted to verifiable, non-pejorative differences: methods, deliverables, jurisdiction, integration. It does not make any claim about Janoshik Analytical's accuracy, professionalism, or peer reputation, all of which are well established. Corrections welcome.

Frequently asked questions

Is CertikLabs a Janoshik alternative?: CertikLabs is an independent third-party peptide testing lab, in the same general category as Janoshik Analytical. Both labs run RP-HPLC purity and mass-spectrometry identity on submitted samples. CertikLabs differs in three structural ways: every report is anchored to a public blockchain (SHA-256 hash on-chain), every batch has a permanent public verification URL, and the workflow is built for brands that want vial-to-report traceability via QR rather than for ad-hoc individual submissions.
Is Janoshik a legitimate peptide testing lab?: Janoshik Analytical is an established independent testing laboratory with a long track record in the research-peptide community. This page is a feature comparison, not a quality judgment — both labs are structurally third-party.
What does CertikLabs offer that a Janoshik PDF does not?: Three things. First, on-chain anchoring: the SHA-256 hash of every report is written to a public blockchain at issuance, so anyone holding the PDF can verify it was not altered without trusting CertikLabs. Second, a permanent public verification URL per batch that anyone can open without an account. Third, vial-level integration — a QR code on the vial resolves to the verification page, so the report travels with the product.
Are CertikLabs reports comparable to Janoshik reports?: Both labs report identity by mass spectrometry and purity by RP-HPLC, which are the two methods that matter most for a research peptide. Numbers from any two labs are only directly comparable when the methods (column, gradient, detection) are equivalent — this is true of any cross-lab comparison, not specific to these two labs. CertikLabs publishes its methods on every report so they can be checked against any other lab's report.
Can a brand list a CertikLabs verification on its product page?: Yes. Every CertikLabs batch has a permanent verification URL and a drop-in badge component that brands embed on product pages. Buyers click through to the public verification page and can independently recompute the on-chain hash. See the Docs page for the embed snippet.
Which lab should I use?: If you are an individual buyer wanting an independent second opinion on a single sample you already hold, either lab will give you that. If you are a brand or manufacturer wanting every batch to ship with a publicly verifiable, tamper-evident anchor that buyers can confirm without trusting you or the lab, CertikLabs is built for that workflow.
Where is each lab based, and does jurisdiction matter?: Janoshik Analytical is based in the European Union (Slovakia). CertikLabs is based in the United States, ISO/IEC 17025-accredited, cGMP-aligned, and registered with CLIA and the DEA. Jurisdiction matters for two practical reasons: which regulator a lab answers to, and shipping logistics for samples. For US-based brands shipping samples domestically, a US lab is faster and avoids customs holds; for EU researchers, the inverse applies. Neither jurisdiction is inherently more credible.
What is on-chain anchoring and why should I care?: On-chain anchoring means the SHA-256 hash of the signed PDF report is written to a public blockchain at the moment of issuance. The hash is a 64-character fingerprint that changes if a single byte of the PDF changes. Anyone who downloads the PDF can recompute the hash locally and compare it against the on-chain record — if they match, the PDF is byte-for-byte the one the lab issued. The point is that authenticity no longer depends on trusting CertikLabs, the vendor, or any intermediary; the public ledger is the source of truth.
How fast is turnaround at each lab?: CertikLabs targets 5–7 business days for standard panels with an expedite option for time-sensitive batches; submission status is visible in the customer console. Janoshik Analytical's published turnaround is in the order of weeks and depends on the current queue and the assays requested. Both labs publish current turnaround on their respective sites, and you should confirm at the time of submission rather than relying on this page.
How much does each lab cost?: CertikLabs publishes per-assay and per-batch pricing on its Pricing page, plus volume programs for brands shipping continuous batches. Janoshik Analytical prices per panel and publishes its rate sheet on its own site. This page deliberately does not quote competitor prices because they change frequently and any number quoted here would go stale; check both sites directly when comparing.
Can I get raw chromatograms and mass-spec data, not just a summary?: Both labs include the chromatogram and mass-spectrum traces in their PDF reports rather than a single pass/fail line, which is the floor for any credible third-party report. CertikLabs additionally exposes the same chromatogram on the public verification page so a buyer can inspect the trace without needing the PDF in hand.
Does either lab test for endotoxins, residual solvents, or microbial load?: Both labs offer extended assays on request. CertikLabs runs LAL endotoxin, water content (Karl Fischer), counter-ion, and residual-solvent screens as add-ons to the standard purity + identity panel. Janoshik Analytical also offers extended assays per request. The standard panel at both labs is RP-HPLC purity plus mass-spectrometry identity.

See a real CertikLabs verification

Open a public verification page. Recompute the SHA-256 hash from the PDF. Confirm it matches the on-chain record. No account required.

Open sample verification View a sample COA For brands