A complete guide to every independent testing lab used by the research peptide community — what they test, what it costs, and which is right for your situation.
| Lab | Location | Individuals? | Approx. Price | Turnaround |
|---|---|---|---|---|
| Janoshik Analytical Gold Standard | Prague, CZ | ✅ Yes | €80–150+ | 1–3 weeks |
| Colmaric Analyticals US | St. Petersburg, FL | ✅ Yes | $150–250 | 7–15 biz days |
| Freedom Diagnostics US | Franklin, TN | ✅ Yes | Contact for quote | ~3–7 days |
| MZ Biolabs US | USA | ⚠️ Primarily vendors | $200–300 | 7–14 biz days |
| Peptide Test US | Michigan | ✅ Yes | ~$120–300/vial | Not stated |
| Chromate US | East Coast, USA | ✅ Yes | Listed on site | Variable (1–8 wks) |
| Finnrick Free option | USA | ✅ Free submissions | Free / paid tiers | Varies |
| Testides Canada | Toronto, Canada | ✅ Yes | CAD pricing | Fast (domestic) |
The most widely used and trusted testing lab in the research peptide community, operating for over a decade. Janoshik was built specifically so individual researchers could submit a single vial and receive a full analytical report — their origin story is explicitly consumer-focused, not pharmaceutical. They process tests for both individuals and vendors, and maintain a publicly searchable database of all results that vendors opt to publish.
A full-service contract research organization (CRO) based in Florida, consistently cited alongside Janoshik and MZ Biolabs as one of the three most trusted labs in the community. Produces detailed analytical reports and accepts both individual researchers and vendors. A strong domestic alternative for US-based researchers who prefer not to ship internationally.
The "Freedom" lab referenced in peptide communities — formally registered as Freedom Diagnostics Testing. A US-based lab gaining rapid community respect, particularly for turnaround speed. Several vendors have switched from Janoshik to Freedom Diagnostics citing comparable results with faster US-domestic logistics. Accepts both individual researchers and vendors.
A DEA Schedule III licensed, pharmaceutical-grade CRO operating at a higher level of rigor than most labs in this space. Uses Waters Acquity UPLC, multiple Bruker QTOF mass spectrometers, and Thermo Scientific systems. Their CoAs are considered among the hardest to replicate or falsify in the community because of the facility's formal regulatory standing. Several established vendors use MZ Biolabs as their default testing partner.
A consumer-friendly US lab with a standout feature: a group testing platform where researchers co-organize testing runs, pool samples, and split costs — reducing per-vial costs from ~$300 to roughly $100–120 in group scenarios. Tests are performed using USP/NF-standard validated methods by pharmaceutical scientists. Results are verified through a tamper-resistant portal.
A US-based testing service for research peptides and dietary supplements with a consumer-accessible submission process and a Verify portal for independent result confirmation. Covers both peptides and broader supplement testing. Pricing is listed per compound type on their website.
Finnrick operates differently from every other entry on this list: it is a testing aggregator and public watchdog rather than a lab you hire to test a specific sample. Finnrick proactively purchases peptides from vendors, sends them to commercial labs for testing, and publishes results alongside vendor ratings. As of 2026 they have published data from over 7,000 tests across 200+ vendors.
They also accept free submissions from individual researchers — you can submit a sample with batch ID and photo documentation for testing at no cost. Researchers can access the full database for free as well.
A Canadian testing service designed specifically for the research peptide community, covering BPC-157, TB-500, semaglutide, tirzepatide, GHK-Cu, PT-141, ipamorelin, CJC-1295, and others. The primary advantage over international labs is domestic Canadian shipping — no customs risk, no multi-week transit times, and faster overall turnaround. Tamper-proof CoA verification system.
Before ordering a test, it helps to know what you're asking for and what the results mean. The three standard measurements:
According to community testing data and the owner of Janoshik Analytical (the world's largest peptide testing lab), heavy metal contamination in research peptides is exceedingly rare and endotoxins are uncommon. The real risk is identity substitution — receiving a different compound than labeled — and under-dosing. HPLC + mass spec covers both of these. Endotoxin testing is available as an add-on but is lower priority for most researchers.
For US-based researchers shipping to Janoshik in Czech Republic: standard international mail typically works. Declare the contents accurately — lyophilized peptide for laboratory analysis. Use a small, padded envelope with adequate protection. Community reports suggest FedEx International Priority or USPS First Class International both work reliably, taking 1–3 weeks.
For US-based researchers: Freedom Diagnostics, Colmaric, Peptide Test, and Chromate all accept domestic US mail, which is faster, cheaper, and avoids any customs considerations.
Never ship reconstituted (liquid) peptide samples — only lyophilized (freeze-dried powder) vials. Liquid samples can degrade in transit and create complications at customs. Most labs will specify their preferred packaging and shipping method after you place an order.
Janoshik Analytical is the most widely used and trusted lab in the research peptide community, with the longest track record and a public, searchable database of results. For US-based researchers, Colmaric Analyticals and Freedom Diagnostics Testing are strong domestic alternatives with comparable capabilities.
A standard purity + identity test (HPLC + mass spectrometry) typically runs $100–300 per vial depending on the lab. Janoshik GLP-1 blind tests are about $300, plus an optional $70 to publish the result publicly. Peptide Test offers a group testing platform where researchers split costs, bringing per-vial pricing to roughly $100–120.
Most labs here accept individual researchers — Janoshik, Colmaric, Freedom Diagnostics, Peptide Test, and Chromate all explicitly accept samples from individuals. MZ Biolabs is oriented primarily toward vendors and businesses.
US-based labs that accept individual samples include Colmaric Analyticals (Florida), Freedom Diagnostics (Tennessee), Peptide Test (Michigan), and Chromate (East Coast); MZ Biolabs is US-based but vendor-oriented. Domestic shipping is faster, cheaper, and avoids customs. Janoshik (Czech Republic) is the most-used lab overall but requires international mail.
Both are top-tier. Janoshik has the longest track record and a publicly verifiable results database, but US researchers must ship internationally (1–3 weeks). Colmaric offers comparable rigor with US-domestic logistics — faster and cheaper to ship to, with no customs. Choose Janoshik if you want a community-recognized, publicly verifiable benchmark; choose Colmaric if you prefer to keep the sample domestic.
A standard test includes HPLC purity (the percentage of the sample that is the target peptide), mass-spectrometry identity confirmation (verifying the compound is actually what the label claims), and quantitative amount (how many mg of active peptide are in the vial). Some labs also test for endotoxins, heavy metals, and specific contaminants on request.
Ship only lyophilized (freeze-dried powder) vials — never reconstituted liquid, which can degrade in transit and complicate customs. Use a small, padded envelope and declare the contents accurately as lyophilized peptide for laboratory analysis. Domestic US shipping is simplest; for Janoshik, standard international mail takes 1–3 weeks. Most labs specify exact packaging after you order, and your Certificate of Analysis (CoA) will reference the lot number tied to your sample.
The most common failures are under-dosing (less active peptide than labeled) and identity substitution (a different compound than labeled). Heavy-metal contamination and endotoxins are far less common, though endotoxin testing is available as an add-on at most labs.
See current prices across tracked US suppliers — with third-party Finnrick ratings linked where available in the comparison table.
View Price Comparison → What CoAs Show (and Don't) →