Janoshik Analytical is a mail-in testing laboratory in the Czech Republic that sells identity, amount and purity analysis of peptides from $215 per vial and issues a report that anyone can check at janoshik.com with two identifiers (prices and portal read 9 October 2026). It is not a US lab, it is not accredited, and it is the second most-used laboratory on Peptigrity's file: Janoshik Labs has 2,604 certificates on file from 122 shops, with an average HPLC purity of 99.5 % across them (verified October 2026).
Two kinds of reader land here. One saw "Janoshik tested" on a vendor page and wants to know whether the lab is real and the certificate is genuine. The other has a vial and wants the price, the turnaround and the shipping steps. Both answers below come from the lab's own pages, its help centre and the platform's live data — not from vendor copy.
The short version
Janoshik Analytical is a real laboratory in the Czech Republic, run by its owner Peter Magic, with no US, UK or Australian branch; every sample ships to Czechia.
The base peptide test reports identity, amount per vial and purity by HPLC for $215–$450 depending on the peptide; the GLP-1 blind test is $360; LC-MS contamination screening, endotoxin, sterility and heavy metals are paid add-ons.
Turnaround is published as an average of 7 business days per product page and 40 hours of lab time on the homepage; shipping and customs come on top, and rush service doubles the test price.
A Janoshik report is verified with its Task number and its Unique key at janoshik.com/verification; a vendor who will not hand over both has not given you a verifiable report.
The lab holds no ISO/IEC 17025 accreditation, which is normal for harm-reduction testing and is the reason raw data on request matters.
Where is Janoshik located?
Janoshik Analytical operates from one facility in the Czech Republic, an EU member state, and from the domain janoshik.com; it has no branch in the United States, the United Kingdom or Australia (janoshik.com and help.janoshik.com, read October 2026). The lab's shipping overview gives its location as the Czech Republic, postal code 252 10, and its owner described the site as a 17,000-square-foot facility in Prague in an April 2026 interview. Every sample from every country is shipped to that one address, which the lab emails after an order is placed.
The search phrase "where is Janoshik located in USA" exists because US vendors print the lab's name without its country. The Czech base matters operationally rather than legally for a buyer: a vial from Texas, Manchester or Sydney crosses a border into the EU, which adds courier time and customs handling that a domestic lab would not. Samples from inside the EU move under the single market with no customs step at all, which the lab's shipping overview states plainly.
The lab's full operating name is Janoshik Analytical; "Janoshik Labs" (the name Peptigrity's profile uses) and "Janoshik Analytics" are the same entity, and the only transactional domain is janoshik.com. The About Janoshik - JANOSHIK page lists the leadership but does not publish a registered company name or a street address, so the search term "Janoshik s.r.o." cannot be confirmed from the lab's own site.
Who runs Janoshik, and is it a legitimate lab?
Janoshik Analytical is run by Peter Magic, listed as Owner & CEO on the lab's About page alongside Edita Prokešová (CSO) and Jakub Dobrík (Managing Director & CFO); the same page claims more than 10 years of analysis of performance-enhancing drugs (read October 2026). Its verification database has run since 2016 according to the owner, and 122 shops have submitted Janoshik certificates to Peptigrity — the second-highest count of any laboratory (verified October 2026). That is what "legit" means here: an identifiable operator, a portal and years of checkable certificates.
The most detailed public account of the lab is the April 2026 episode Derek Interviews Peter Magic (Janoshik Analytical) on the Research Radar podcast, which includes a tour of the Prague facility. In it Magic puts the operation at about 40 employees, 200–600 samples tested per day, more than 10 HPLC instruments plus an NMR, and an error rate he estimates at 1–2 per 10,000 samples. These are the owner's own figures, not audited ones, and the article reports them as such. An earlier interview with the Gray Market newsletter (September 2025) covers how the lab entered peptide testing and when a certificate can legitimately be reused.
Janoshik is a harm-reduction laboratory: it tests what a client already owns and reports to that client. It is neither a regulatory-compliance lab (one that submits results to the FDA or EMA under an accreditation regime) nor a forensic lab (one that tests evidence for court). The About page describes its reports as "100% anonymous and secure test reports" and links a privacy policy; nothing on the site states what the lab would do in response to a legal request, so no claim about that is made here.
Independence has two sides. Janoshik sells no peptides and names no preferred vendors; its revenue is the test fee. It does, however, charge clients to publish a report on its public page — $85 for a two-month listing and $120 more for seven days at the top (help centre, read October 2026) — so the public list is a paid showcase rather than an archive. Peptigrity has no commercial relationship with Janoshik or any other laboratory; the platform's lab directory, where peptides get verified, is sorted by certificates on file and nothing a lab can buy.
What does a Janoshik peptide test actually measure?
A standard Janoshik peptide analysis — BPC-157, TB-500, ipamorelin and the rest of the catalogue — is sold as an "ID, amount and purity analysis" by HPLC, and the report states milligrams per vial and peptide purity (product pages, read October 2026). High-performance liquid chromatography (HPLC) separates the vial's contents and reports what fraction of the peptide signal is the main peak; the base test also quantifies the milligrams of that peptide in the vial. Mass spectrometry is not included: "LCMS Screening For Peptide Contamination" is a $205 add-on.
Purity, identity and net content are three different measurements, and a report line answers only the one it names. Purity is the main-peak fraction of what the peptide signal shows; identity is whether that main peak is the molecule the label names; net content is how many milligrams are actually in the vial. Janoshik's base report carries all three fields for a named peptide, but its identity call rests on the chromatography matching the ordered compound, not on a molecular-weight measurement — Why a Peptide Can Be 99 Percent Pure and Still Be Entirely the Wrong Molecule explains why that distinction decides what a certificate proves. A buyer who wants a mass-based confirmation adds the LC-MS screen or the CHNS mass report.
The Common GLP-1 peptide blind test (Semaglutide, Tirzepatide and Retatrutide) - JANOSHIK is the lab's most-ordered product and the one that answers the counterfeit-pen question: the client does not declare which of the three GLP-1 peptides the vial should contain, the lab identifies the peptide present, measures its amount and reports purity, and if two or three are mixed it reports the identity and amount of each. The product page states a detection limit below one-twentieth of a usual dose per vial and notes that purity may not be measurable on a mixture.
What each Janoshik report line can and cannot tell you (product pages, read October 2026)
Report line or add-on | What it measures | What it cannot tell you | Price (USD) |
|---|---|---|---|
ID, amount and purity (base test, HPLC) | Whether the ordered peptide is present, mg per vial, main-peak purity | Whether an unexpected molecule is present; endotoxin or sterility | $215–$450 by peptide |
GLP-1 blind test | Which of semaglutide, tirzepatide, retatrutide is present; amount; purity | Anything outside those three peptides | $360 |
LC-MS screening for peptide contamination | Mass-based screen for peptides other than the one ordered | Purity (that is the HPLC line) | +$205 |
Endotoxin analysis | Bacterial endotoxin level | Live microbial contamination; purity | +$180 |
Sterility testing (TAMC + TYMC) | Total aerobic microbial and yeast/mould counts | Endotoxin; identity | +$290 |
Heavy metals (As, Cd, Pb, Hg) | Four metals | Peptide identity, purity or amount | +$105 add-on / $145 standalone |
Smaller add-ons on the same pages: GLP-1 aggregate analysis +$150, CHNS mass report +$145, TFA analysis +$290, fentanyl presence +$75, variance testing +$75, pH +$35, an additional report +$50 and raw data +$25. The raw-data option is the one that matters for anyone auditing a result, because it is the chromatogram, not the summary number, that another chemist can read.
Is Janoshik ISO/IEC 17025 accredited?
No. Janoshik Analytical does not hold ISO/IEC 17025 accreditation, the international standard for testing-laboratory competence; its About page claims none, Peptigrity's profile has none on file, and the owner's April 2026 interview carries a chapter titled "Accreditation in this space: why it doesn't really exist or matter" (read October 2026). No consumer-facing peptide testing lab on Peptigrity's file holds it either, so the absence is a feature of the category, not a Janoshik-specific gap.
ISO/IEC 17025:2017 - General requirements for the competence of testing and calibration laboratories covers the laboratory's impartiality, its competence and the consistency of its operation, enforced through third-party audit of methods, traceability and quality management. A lab that needs its certificates accepted by a regulator, a court or a pharmaceutical client is audited against it. A harm-reduction lab reporting to the person who sent the vial is not, and the chemistry of an HPLC run does not change with the audit status — what changes is who has checked the lab's procedures.
The practical consequence for a buyer: a Janoshik certificate is not a document for a regulatory submission or a legal proceeding, and it is an independent check on what a research vial contains. Because no external auditor stands behind the method, the substitutes are the ones any lab can offer — a named method on the report, raw data on request ($25 at Janoshik) and a public verification portal — and Janoshik offers all three.
How much does Janoshik testing cost?
Janoshik's base price for a single named peptide is $215 (BPC-157, TB-500, ipamorelin, GHRP-2, GHRP-6, PT-141, Melanotan 2, CJC-1295 with and without DAC, AOD-9604 by HPLC), rising to $290 for a second tier (GHK-Cu, sermorelin, tesamorelin, thymosin alpha-1, epithalon, Semax, Selank, DSIP, glutathione) and $450 for most of the remaining catalogue, with the GLP-1 blind test at $360 (Peptides - JANOSHIK, 77 products, read 9 October 2026). Shipping is paid by the sender and is not included in any price.
The upper tiers run higher: IGF-1 LR3 and the HGH amount-and-purity test are $360; the HGH test with dimer and higher-molecular-weight analysis is $500, as is the GLOW blend; the KLOW blend is $800; a blind peptide screening with no declared compound is $600; the CagriSema blend is $630. Blends cost more than their components because each peptide in the vial is quantified separately. Prices on janoshik.com are displayed in US dollars and change without notice; the figures above are a snapshot dated 9 October 2026, and the lab's page is the only current source.
Two multipliers sit on top of the menu. Rush service is a 100 % surcharge on the value of the expedited tests, requested through the contact form before the sample arrives, and some add-ons cannot be rushed. Publishing a report on public.janoshik.com costs $85 for two months, with a $120 "Premium Top" placement for seven days. A US buyer running the $215 base test with the $205 LC-MS screen therefore pays $420 plus a UPS shipment, before any rush fee.
For scale, Peptigrity's live lab directory puts a base identity-purity-quantity panel at US laboratories at $150–$325 on published rates, and 9 of the 35 listed labs publish prices at all (verified October 2026). Janoshik's $215 entry tier sits inside that range; its add-on menu is broader than most, and the international shipment is the cost the US labs do not carry.
How long does Janoshik testing take?
Janoshik publishes three turnaround figures: an average of 7 business days on each product page, an average lab turnaround of 40 hours from sample receipt on its homepage, and a rush average of 5 hours (read 9 October 2026). Plan around the product-page figure; the homepage number counts only time inside the lab. Shipping to Czechia and customs add days on each side, and sterility takes longer: the owner said in April 2026 that sterility reports come back at 14 days while other results are released earlier.
The owner's own April 2026 statement — "2-3 business days standard, rush service available (24 hrs)" — is faster than the product pages promise, and a client should treat the product page as the commitment and the interview as a description of a good week. Peptigrity's lab directory shows a reported turnaround per lab only once 5 ordering clients have submitted their receipt-to-report times in the last 12 months; Janoshik's reported figure was not yet available at the October 2026 read, so the lab's own statement stands alone for now.
Courier choice is the biggest variable a sender controls. Janoshik's help centre tells US clients to ship with UPS through Pirate Ship and to "Make sure you select UPS, not USPS", warning that a USPS parcel can incur a $70 customs clearance fee, arrive roughly 30 days later or be returned (Region specific instructions for USA, read October 2026). The same page says a courier other than the one in the order email risks delays, extra fees or a returned package.
How do you send a peptide sample to Janoshik?
Sending a sample is a six-step process set out in Janoshik's help centre: order the test on janoshik.com, follow the packing and shipping instructions emailed after the order, arrange and pay for the courier yourself, enter the tracking number and package contents on the order's confirmation page, complete a commercial invoice where your region requires one, and wait for the lab's email when the parcel clears customs (shipping overview, read October 2026). Results arrive by email once approved and stay in the client account under Order History.
The address is not printed on the open web; it arrives in the post-order email together with the recommended couriers for your region. That is standard practice for a mail-in lab and the reason an address copied from an old forum post is the wrong one to use. For a reader who has not chosen a lab yet, how to test your peptides sets out what each layer of testing costs and proves before any vial is shipped, and How to Get Your Peptides Independently Tested: A Step-by-Step Guide walks through the packaging and declaration steps that apply to every laboratory.
What to put in the parcel
For a lyophilised peptide, Janoshik asks for at least one whole, unreconstituted vial; for raw API powder, 30 mg in a sealed glass vial so the sample does not absorb moisture (product pages, read October 2026). Oils and liquid solutions need 0.5–1 mL, oral tablets or capsules 3 pieces (one is tested, two are kept as backups), and liquid oral suspensions a whole bottle where possible. Sterility testing needs two unopened vials. Ambient shipping is the norm for lyophilisate; the lab does not ask for cold packs.
What goes on the customs form
Non-EU parcels go through export customs at home and import customs in the Czech Republic; Janoshik's shipping overview says the sender usually needs to do nothing for export and that the lab's team handles the import clearance. On the shipping declaration, the help centre's own instruction is to select "Gift" as the content type, and to complete a commercial invoice "according to instructions" where one is required. EU senders skip the customs step entirely. Whatever the form says, the lab matches the parcel to the order through the tracking number and contents entered on the confirmation page — a parcel with no tracking entry is a parcel the lab cannot attribute.
How do you verify a Janoshik COA is real?
A Janoshik report is verified with two identifiers: the Task number printed at the top and the Unique key printed at the bottom, entered together on the Verification - JANOSHIK page or read from the report's QR code (help centre, read October 2026). The portal returns the lab's stored copy; the help centre's rule is that a report "is considered legitimate only if it matches the version stored in our system". A report missing either identifier cannot be verified — and that is the version vendors most often publish.
The cropped certificate is the common trick. A vendor screenshots the top of a genuine report, showing the Task number, the compound and a 99 % figure, and leaves the Unique key out of frame; the image looks authentic and cannot be checked. The lab's own page How to verify a report? says to request the full report with both identifiers from the vendor, and the key must be typed in capital letters. A vendor who declines is not protecting anything — the key unlocks one stored report — and the refusal is the red flag. The wider pattern of recycled graphs, altered dates and mismatched client names is catalogued in Red Flags in Peptide Certificates of Analysis (CoA).
Public Tests - Janoshik Analytical is a different thing from the verification portal. It lists reports whose clients paid for a public listing, each with a test number, a product description and vendor-supplied "tested by" and "Made By" fields, and each linking to the stored report. Presence on the page proves a test exists; absence proves nothing, because listing is optional and paid; and the vendor text beside each entry is marketing the lab says it does not endorse. A search there is a useful second check, never a substitute for the two-identifier lookup.
Five checks on a "Janoshik tested" claim
Check | What it confirms | How to verify | Red flag |
|---|---|---|---|
Task number + Unique key | The PDF matches the lab's stored report | janoshik.com/verification or the QR code | Only a cropped image, or the key withheld |
Compound and amount on the stored report | The test was for the peptide and vial size being sold | Read the stored report, not the vendor's image | A 10 mg listing backed by a 5 mg report |
Batch number | The vial in front of you is from the tested lot | Compare the vial label with the report's batch field | No batch on the vial or on the report |
Client name | Who commissioned the test | Stored report; a wholesaler's name is common | The vendor cannot explain whose test it is |
Test date | The result is recent enough to describe current stock | Stored report | A 2024 report on a 2026 batch |
A matching batch number is the check that separates a meaningful certificate from a decorative one: when the client is a wholesaler and the vial's batch matches, the retail vendor is selling from the tested lot; when it does not, the report describes a different batch from a different supply chain. For a vial you already hold, Check your vial looks up the shop and lot against the certificates on file, and the certificates themselves, by compound, are in Peptide Lab Tests.
How does Janoshik compare to US-based testing labs?
On Peptigrity's live directory, Janoshik Labs holds 2,604 certificates against 4,850 for freedomdiagnosticstesting.com, and the two together account for 56 % of the 13,349 certificates on file; US laboratories hold 74 % of the total and Czech ones 22 % (verified October 2026). The trade is the same for every non-EU buyer: a US lab saves the international shipment and the customs step; Janoshik offers a wider published add-on menu, the GLP-1 blind test and a decade-old verification database. Neither count measures accuracy; both measure use.
Twenty of the 35 laboratories on file publish a public lookup portal, so verifiability is no longer Janoshik's distinguishing feature — Chromate, Vanguard Laboratory and Kovera Labs each hold several hundred certificates and a portal of their own. What still distinguishes Janoshik in practice is the breadth of its priced catalogue (77 peptide products plus blends, with contamination, endotoxin, sterility and heavy-metal add-ons on one order) and a client base that spans the EU, where the parcel never meets customs. The lab-by-lab comparison, with methods, sample minimums and portal types side by side, is the job of Janoshik Alternatives: How to Choose a Peptide Testing Lab rather than this page.
A two-lab pattern is common among buyers who test repeatedly: routine re-checks of a known vendor go to a domestic lab for speed and cost, and a vial whose identity is in doubt — a new vendor, a suspected counterfeit GLP-1 pen, a discontinued shop's remaining stock — goes to Janoshik for the blind test and the add-on screens. The directory's sorting by certificates on file, which no lab can pay to change, is the one ranking on this site; it records how often buyers have used each lab, not which lab is right.
Frequently Asked Questions
Is Janoshik testing legit?
Yes. Janoshik Analytical is an operating laboratory in the Czech Republic with a named owner (Peter Magic), a verification portal its owner says has run since 2016, and 2,604 certificates from 122 shops on Peptigrity's file (verified October 2026). It holds no ISO/IEC 17025 accreditation, and neither does any consumer peptide lab listed on the platform. A certificate is only as legitimate as its two-identifier check, so verify each report rather than the lab's name.
Where exactly is Janoshik's address?
Janoshik does not publish its street address; the help centre gives the location as the Czech Republic, postal code 252 10, and the full address arrives in the email sent after an order (read October 2026). Use the address in your own order email, because older addresses posted on forums may no longer be current. The facility is a mail-in laboratory, not a storefront, and does not take visitors.
What is the unique key on a Janoshik report?
The Unique key is the second identifier printed at the bottom of every full Janoshik report; together with the Task number at the top it unlocks the lab's stored copy on the verification page (help centre, read October 2026). Enter it in capital letters. A report shared without the key cannot be verified, so ask the vendor for the full version.
Does Janoshik test for endotoxins?
Yes. Endotoxin analysis is a $180 add-on on every peptide product page and a standalone item in the lab's harm-reduction category, alongside sterility testing (TAMC + TYMC, $290), LC-MS contamination screening ($205) and heavy-metals screening (read 9 October 2026). Endotoxin is not included in the base identity-amount-purity test and must be added at order time.
Can Janoshik test Ozempic or Mounjaro pens?
Yes, through the $360 GLP-1 blind test, which identifies whether semaglutide, tirzepatide or retatrutide is present and measures the amount, without the client declaring which one the pen should hold (product page, read October 2026). The test covers only those three peptides; a pen containing something else returns "not detected" for all three. The lab tests the sample as received and makes no statement about the product's approval status.
Is Finnrick the same kind of service as Janoshik?
No. Finnrick, a US testing and vendor-rating service, states on its own site that it does not run a laboratory: it receives samples at a facility in Texas, anonymises them and commissions analysis from partner labs it names, including Krause Analytical and BTLabs. Janoshik is the laboratory itself. "Finnrick vs Janoshik" is therefore a comparison of an intermediary with a lab, and the useful question for a buyer is which laboratory actually produced the report.
What is the difference between Janoshik, Janoshik Analytical and Janoshik Labs?
They are one entity. Janoshik Analytical is the lab's operating name on its own site; Janoshik Labs is the name on Peptigrity's profile and in common use; "Janoshik Analytics" appears on some vendor pages. Every version resolves to janoshik.com and the same Task number and Unique key verification.
This article is for educational and informational purposes only and does not constitute medical advice. Peptides discussed may be investigational compounds not approved by the FDA (or equivalent regulators in your jurisdiction) for human use. Peptigrity does not recommend doses; any dose figure above is an approved-label value, a published-trial value or a community report, and is labelled as such. Always consult a qualified healthcare provider before using any peptide or research compound. Peptigrity is an independent review platform and does not sell, endorse, or recommend specific products or vendors.
