Janoshik Analytical vs Gold Standard Analytics
Janoshik Analytical is the most-referenced peptide testing lab in the research community and the certificate most vendors publish. Gold Standard Analytics does the same HPLC and LC-MS/MS work from Houston, ships domestically on a prepaid label, and publishes every result it signs, including failures. This page compares the two on the things a buyer actually pays for.
Janoshik Analytical (Janoshik s.r.o.), Prague, Czech Republic. janoshik.com. Facts checked September 9, 2026.
What Janoshik does well
- The largest published catalog in the segment: 76 peptide analyses on the 2026 menu, plus steroids and SARMs.
- A decade of consistent blind-test results and a verification portal that catches forged certificates.
- Recognised by many overseas vendors for guarantee claims, so a Janoshik number travels well.
- Accepts card, Apple Pay, Google Pay, BTC, USDC and USDT.
Side by side
| Gold Standard Analytics | Janoshik Analytical | |
|---|---|---|
| Location | Gold Standard AnalyticsHouston, Texas. Samples ship domestically on a prepaid UPS label we issue. | Janoshik AnalyticalPrague, Czech Republic. US samples ship internationally; community reports put UPS at $50–75 each way. |
| Peptide identity, purity and content | Gold Standard AnalyticsGSA peptide base pricing includes LC-MS/MS identity and HPLC purity. Net peptide content is a separate $29 add-on at every peptide tier. Select the compound and tests in the current intake for a quote. | Janoshik AnalyticalMost single-peptide tests $215 or $290; GLP-1 blind test $360; specialty peptides $450 (2026 menu). |
| Full injectable panel (purity + endotoxin + sterility + metals) | Gold Standard AnalyticsPanel totals depend on the selected compound and assays. View the current GSA intake for the scope and itemized quote. | Janoshik AnalyticalApproximately $828 for a full GLP-1 panel per community pricing. |
| Public results | Gold Standard AnalyticsEvery certificate we sign is public and searchable, including failures and retractions. | Janoshik AnalyticalPublic database shows the tests customers choose to publish; others are verifiable by key but not listed. |
| Methods on the certificate | Gold Standard AnalyticsMethod, column, wavelength, instrument ID, LOD/LOQ and calibration reference printed on every COA; raw chromatograms publishable on opt-in. | Janoshik AnalyticalReviewers note COAs lack methodology detail and raw data is available on paid request. |
| Chain of custody | Gold Standard AnalyticsEvery package opened on camera, container photographed, blind-coded; footage retained three years and shared with the client. | Janoshik AnalyticalNo published receiving footage or custody record per test. |
| Ordering | Gold Standard AnalyticsSelf-service online intake with live quote, account verification, instant label. API, MCP server, Telegram and WhatsApp bots. | Janoshik AnalyticalWeb catalog with email-based ordering for items not listed; reviewers ask for self-service. |
| ISO/IEC 17025 | Gold Standard AnalyticsProcedures modelled on ISO/IEC 17025 with GLP-style data integrity. Not accredited. | Janoshik AnalyticalNot accredited. |
| Payment | Gold Standard AnalyticsCard, Apple Pay, Google Pay, Klarna, bank, Mercury invoice with net terms, and any crypto via Paygate. | Janoshik AnalyticalVisa, Mastercard, Amex, Apple/Google Pay, BTC, USDC, USDT. |
| Refunds | Gold Standard AnalyticsSee the refund policy for the remedies that apply to your order. A confirmed error of ours is corrected publicly, and credited or refunded if it can’t be fixed. | Janoshik AnalyticalResults within 21 days or a full refund plus free results. |
| Group testing | Gold Standard AnalyticsBuilt-in pools of 2–50 contributors with authorizations, auto-refund and the same public certificate for everyone. | Janoshik AnalyticalGroup testing available by contact form. |
Sources: peptideprotocolwiki.com, Jul 2026; labowned.com menu snapshot, Jul 2026; peptidegrades.com, May 2026; peptigrity.com, Apr 2026; peppal.app, Aug 2026; janoshik.com, checked Sep 2026; trustpilot.com/review/janoshik.com, Aug 2026; Multiple independent reviews, 2026; janoshik.com footer, Sep 2026; janoshik.com contact form, Sep 2026.
Published prices
| Test | Gold Standard Analytics | Janoshik Analytical |
|---|---|---|
| Semaglutide identity, purity, content | Gold Standard AnalyticsView current pricing | Janoshik Analytical$360 |
| BPC-157 identity, purity, content | Gold Standard AnalyticsView current pricing | Janoshik Analytical$215 |
| GHK-Cu identity, purity, content | Gold Standard AnalyticsView current pricing | Janoshik Analytical$290 |
| BPC-157 / TB-500 blend | Gold Standard AnalyticsView current pricing | Janoshik Analytical$320 |
| Endotoxin add-on, USP <85> | Gold Standard Analytics+$199 | Janoshik Analytical$165 |
| GLP-1 with endotoxin, sterility and metals | Gold Standard AnalyticsView current pricing | Janoshik Analytical$828 |
Gold Standard prices are the published catalog. Janoshik single-test prices are from the 2026 published menu as reproduced by labowned.com (July 2026); the endotoxin add-on and full panel figures are community-reported ranges (vantixbio.com, peptideprotocolwiki.com). Shipping to Prague is not included in Janoshik figures.
Questions about Janoshik Analytical and Gold Standard Analytics
Is Gold Standard Analytics a Janoshik alternative for US buyers?
Yes. The panels are the same chemistry: LC-MS/MS identity, HPLC-UV purity and net peptide content, plus endotoxin, sterility and heavy metals as add-ons. The differences are domestic shipping on a prepaid label, every result published, methods and instrument ID on the certificate, and self-service ordering.
How do Janoshik prices compare?
On the 2026 menu most Janoshik single-peptide tests are $215 or $290 and a GLP-1 blind test is $360, before $50–75 international shipping. Gold Standard starts at $189 per peptide and $289 for the GLP-1 class, with the UPS label included.
Is Janoshik ISO 17025 accredited?
No, and neither is Gold Standard Analytics. We say so plainly; no laboratory in this segment currently holds accreditation for these assays.
Can I verify a Janoshik certificate on this site?
No. Janoshik certificates verify at janoshik.com with the task number and unique key. Gold Standard certificates verify here by accession number, and every one we sign is listed in the public library.
Does Janoshik publish failing results?
Janoshik publishes the tests that customers choose to make public. Gold Standard publishes every certificate it signs, including failures and retractions, and a client cannot remove one.
Why does the chain of custody matter?
A certificate is only evidence if it can be tied to the vial you sent. Gold Standard opens every package on camera, photographs each container and assigns a blind code; the footage is retained three years and shared with you.
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Submit a sample
Prepaid domestic label, public certificate, chain-of-custody video.