Finnrick is an independent peptide testing program that has samples, mostly bought by ordinary customers, tested at partner labs and publishes the results as public vendor ratings. Each test is graded pass or fail against a stated standard, and a vendor's rating is a time-weighted pass rate. As of our September 26-28, 2026 checks, only one of the eight vendors we list, Swiss Chems, has any Finnrick tests.
Notice: Research peptides are sold for in-vitro laboratory research only. They are not FDA-approved, not for human or animal consumption, and this page is not medical advice.
We compared Finnrick with a single-sample lab in Janoshik vs Finnrick. This guide explains Finnrick itself: who runs it, how the math works, and how to read a vendor page.
Who runs Finnrick
According to its about page, Finnrick Analytics is led by CEO Raphaël Mazoyer and chairman Michael Carter, and is backed by individual investors including Naval Ravikant. It states three policies relevant to independence. It doesn't:
- sell peptides or any other compounds,
- "publish vendor-supplied testing data," or
- "accept payment to modify ratings."
Samples come from two routes: "free testing of samples submitted by the public" and samples Finnrick procures "directly from vendors." Free community testing is for US residents only.
Scale and labs (as of September 2026)
Finnrick's homepage listed 10,405 samples tested and 280 new results in the past month, last updated September 20, 2026. It names four partner labs: Krause Analytical, BTLabs, Ichor Life Sciences and PharmLabs. The base panel is identity, purity and quantity, with endotoxin and heavy-metals panels as add-ons.
Its vendor directory listed 1,884 vendors. Swiss Chems' page ranked it #341 of 345 ranked vendors, so most listed vendors aren't ranked at all.
How a rating is built
Finnrick's methodology page explains the math. Here it is in plain terms.
Step 1: each test passes or fails a standard
A test is classed as "pass, fail, or incomplete under the selected standard." The headline standard shown on the site is Purity focus: purity 99.5%+, dose ±35%. Other standards are stricter or add checks:
| Standard | Purity | Fill tolerance | Labeling | Endotoxin |
|---|---|---|---|---|
| Purity focus (default shown) | 99.5%+ | ±35% | Not scored | Not scored |
| Finnrick Standard | 99.5%+ | ±25% | Score 0.5+ | Not scored |
| Purity focus strict | 99.8%+ | ±35% | Not scored | Not scored |
| Super strict | 99.8%+ | ±15% | Score 2.0+ | Not scored |
| Accuracy focus | 98%+ | ±20% | Score 0.5+ | Fails above 40 EU/sample |
Labeling score runs from 0 to 2. A batch identifier printed on the container earns more than one on a separate insert, and a website-only batch claim earns nothing.
Step 2: only "classifiable" tests count
A test counts only if it has enough data to judge identity, purity, quantity and labeling. Incomplete tests still appear in a vendor's history but "do not count toward that standard's pass rate." For endotoxin, a missing result isn't held against a sample; only a measured result above the threshold is.
Step 3: recent tests count more
The "natural rating" is a weighted pass rate. Each test's weight halves every 730.5 days (about two years). A test from last month counts almost fully. A test from two years ago counts half.
Step 4: thin data is pulled toward a baseline
The final rating adds a "prior" based on how that peptide performs across all vendors. With few tests, the rating sits closer to that baseline. With many tests, the vendor's own results dominate. The prior's strength ranges from 0 to 20 depending on how much evidence exists for that peptide.
What this means for you: a small vendor with three tests can't score very high or very low on its own results alone. Look at the raw pass count, not just the percentage.
How to look up a vendor
- Search the directory. The vendor directory shows the top 20 without an account. Finnrick says the full list is "ranked, searchable, and sortable with a free account."
- Try the vendor's URL slug. Profiles live at
finnrick.com/vendors/<name>. Names don't always match the storefront: PSPeptides appears as ProSupply PS Peptides, and Peptide Plugs is at a different path. - Read four things on the page: total tests, passes, date range, and which products were tested.
- Read the notes. Finnrick adds short written analysis, such as flagging underfills or thin batch documentation.
- Check "0 tests" pages carefully. A profile with "Not enough classifiable tests to rate this vendor yet" is not a bad rating. It's no rating.
Which of our vendors have Finnrick data
Checked September 26, 2026. Vendors appear in our editors' ranking order, which isn't sorted by score (method).
| Vendor | Finnrick profile | Tests | Rating |
|---|---|---|---|
| American Peptides | Yes | 0 | Not rated |
| NextGenPeps | None found | - | - |
| PSPeptides | Yes, as ProSupply PS Peptides | 0 | Not rated |
| Ascension Peptides | Yes | 0 | Not rated |
| Peptide Plugs | Yes | 0 | Not rated |
| Swiss Chems | Yes | 10 (4 passed) | 48%, #341 of 345 |
| Licensed Peptides | None found (checked September 28, 2026) | - | - |
| Alpha Pro Peptides | None found | - | - |
Swiss Chems in detail
Swiss Chems' Finnrick page covers tests from April 1, 2025 to April 28, 2026:
| Product | Tests | Finnrick rating |
|---|---|---|
| Ipamorelin | 4 | 65% |
| BPC-157 | 3 | 52% |
| CJC-1295 | 3 | 24% |
Finnrick's notes say "identity and purity generally test well but fills are uneven," cite "repeated severe purity misses and underfills" for CJC-1295, and describe batch documentation as "thin." Swiss Chems also has a December 2024 FDA warning letter, disclosed on its review.
For the other seven, there's no independent data to check their own COAs against. That's why each scores the floor on our independent-testing factor. We track changes on our vendor testing tracker.
Outside our list, some vendors do have meaningful Finnrick data. For example, Peptidology had 18 tests and a 71% rating as of October 6, 2026 (Finnrick).
Limits to keep in mind
- Small numbers. Ten tests across three compounds is a thin base for a vendor-wide judgment.
- Age. Swiss Chems' newest test is from April 2026. Batches sold since then aren't covered.
- Compound skew. Customers test what they buy. A vendor's rating may reflect a handful of products.
- Chain of custody. Customer samples travel and sit in storage before testing. Finnrick doesn't publish how each sample was handled.
- A strict bar. Under Purity focus, 99.4% purity counts as a fail. That's fair for a vendor advertising 99%+, but a "fail" can be a near miss. Our HPLC purity guide explains why labs can disagree by fractions of a percent.
- Labs differ. Finnrick uses several partner labs. Methods and instruments vary between them.
How we use Finnrick
Finnrick results make up the independent-testing factor in our vendor scores. We pair it with checks you can run yourself: verifying a Janoshik report and reading a COA. See the ranked list at best peptide vendors in the USA and our third-party tested peptides page.
Finnrick data checked September 26, 2026. We aren't affiliated with Finnrick. Ratings change as new tests are added.