🍪 CompoundTalk uses cookies to improve your experience, analyze traffic, and personalize content. By continuing to use this site, you agree to our Cookie Policy.
Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingSterility testing per USP <71> — need advice

Sterility testing per USP <71> — need advice

sarah_TO Tue, Feb 18, 2025 at 12:02 PM 13 replies 1,420 viewsPage 1 of 3
This thread is more than 12 months old. Information may be outdated. Consider searching for more recent discussions.
sarah_TO
Member
278
1,234
Sep 2024
Toronto, CA
Feb 18, 2025 at 1:27 PM#1
I've used both Finnrick Analytics and Janoshik Analytical extensively and I keep seeing people ask which one is better. The answer isn't simple, so let me lay out a detailed comparison. Janoshik Analytical (est. ~2015) - Location: Czech Republic - Focus: General analytical testing for research chemicals, peptides, AAS, SARMs - Business model: Paid testing service - Pricing: $120-420 depending on test type - Turnaround: 5-10 business days after sample receipt - Payment: Crypto (discount), bank transfer - Track record: 8+ years, thousands of samples, well-established reputation Finnrick Analytics (est. ~2025) - Location: United States - Focus: Primarily peptides, especially GLP-1 agonists - Business model: Hybrid (free community testing + paid services + vendor database) - Pricing: Free for qualifying peptides, $120-350 for paid tests - Turnaround: 7-12 business days - Payment: Crypto, credit card, bank transfer - Track record: ~1 year, growing rapidly Both are legitimate analytical services, but they serve somewhat different roles in the community. Let me break down the pros and cons. ⚖️
39 6andrew_nyc, Dr.EndoEP, GraceAZ_72 and 36 others
Reply Quote Save Share Report
Dr.KarenChen
VIP Member
4,210
24,567
Nov 2023
San Francisco, CA
Feb 18, 2025 at 1:44 PM#2
Great comparison foundation. Let me add my perspective on the analytical quality: Janoshik — Analytical Strengths: - Longer track record means more validated methods - Handles a wider range of compounds (not just peptides) - Mass spec capability for definitive compound identification - Results have been cross-validated against university labs multiple times - Extremely detailed chromatographic data in reports Finnrick — Analytical Strengths: - US-based means faster shipping for North American members (no international customs) - Free testing program lowers the barrier to entry - Vendor rating system provides aggregated, easy-to-understand data - Newer equipment (they claim state-of-the-art HPLC instrumentation purchased in 2025) - Faster turnaround on average My hot take: Janoshik is the established gold standard with proven reliability. Finnrick is the promising newcomer with innovative community features. I wouldn't say one is "better" than the other — they complement each other.
45 3JessicaM_2024, TomFromTexas, mike.trainer_LA and 42 others
Reply Quote Save Share Report
Dr.PulmRoch
Member
456
2,345
Jun 2024
Rochester, MN
Feb 18, 2025 at 2:01 PM#3
If I can only afford to test one sample and I'm in the US, which should I use? I have a new tirzepatide vendor I want to verify.
31 4AttorneyGrant, DebRD_ATL, KristenIndy and 28 others
Reply Quote Save Share Report

Janoshik Analytical — Independent Testing

Trusted third-party HPLC & mass spectrometry analysis. Verify peptide purity with the lab the community relies on. Independent. Accurate. Transparent.

Verify Your Peptides
nancy_portland
Member
345
1,567
Aug 2024
Portland, ME
Feb 18, 2025 at 2:18 PM#4
If you're in the US with a new vendor, try Finnrick's free testing program first. If your vendor isn't already in their database, you'll likely qualify for free HPLC purity + identity testing. You'd only pay for shipping (~$10 domestic vs $15-20 international to Czech Republic). If Finnrick's free program isn't available (vendor already well-tested, compound not eligible, etc.), then Janoshik at ~$180 for identity + purity is the reliable fallback. > For US members: Finnrick first (possibly free), Janoshik as backup. > For EU members: Janoshik first (faster shipping), Finnrick if free test available. > For everyone: ideally, use both over time for cross-validation.
15 15Dr.PeteFamMed, claudia_zurich, nancy_portland and 12 others
Reply Quote Save Share Report
LarryQC_SD
Senior Member
2,123
9,876
Jan 2024
San Diego, CA
Feb 18, 2025 at 2:35 PM#5
Let me address the elephant in the room: can we trust Finnrick as much as Janoshik? This comes up a lot and it's a fair question. Janoshik has 8+ years of consistent, verified results. Finnrick has about 1 year. Trust is earned over time. Arguments FOR trusting Finnrick: - Their results have been consistent with Janoshik results when both tested the same vendor/batch - Several members have sent split samples to both services and gotten concordant results - They publish their methodology openly - Their vendor rating system has correctly identified bad vendors that were later confirmed by Janoshik tests Arguments for CAUTION with Finnrick: - Shorter track record means less historical validation - Their business model (free testing, vendor database) creates potential conflicts of interest that Janoshik's simple paid model doesn't have - Some concern about whether vendors could influence ratings through selective submissions My position: Finnrick has earned initial trust through consistent results, but they haven't yet earned the deep institutional trust that Janoshik has built over nearly a decade. Give them time. So far, so good.
3 17dan_philly, MeganSA_TX, LarryQC_SD
Reply Quote Save Share Report

Similar Threads

HPLC vs UPLC for peptide purity — method comparison study18 replies
Mass spectrometry for peptide identity verification — ESI-MS guide7 replies
Endotoxin testing methods — LAL vs recombinant Factor C17 replies
Red flags on COAs — how to spot a fake certificate5 replies
USP reference standards for peptide verification — sourcing guide3 replies
ForumsNewTrendingMembersAccount

Log In

Forgot password?
No account? Register