I'll vouch for Janoshik's reliability. I've sent split samples — same vial, tested both at Janoshik and at a CLIA-certified US lab. Results were within 2% of each other on potency (HPLC). That's well within inter-laboratory variability.

The turnaround time can be slow during their busy periods (after holidays, etc.) but results have always been thorough. Their reports include full chromatograms, peak integration data, and a clear pass/fail assessment. 📈

OK so let me do the math on whether testing is "worth it":

• Janoshik full panel: ~$130
• International shipping: ~$55
• Sample cost (0.5mL of my $150 vial): ~$37.50
• Total cost of testing: ~$222.50

My monthly compounded sema cost: $150. So testing one batch costs more than one month of medication. Is it worth it for every batch? Probably not. But for your first batch from a new pharmacy? Absolutely. Test once to establish trust, then periodically retest (maybe every 3-6 months) to verify consistency.

That makes sense — test the first batch and then spot-check occasionally. I'm going to submit my sample this week. Will report back with results!

One more thing — should I tell my pharmacy I'm sending their product for third-party testing? Or is that going to cause issues?

You don't have to tell them, and honestly it's better if you don't — at least not before you get results. If they know you're testing, a bad actor could selectively send you a "good" batch next time. Test first, then share results with them if you want to see their response.

A pharmacy that's confident in their product will welcome third-party verification. One that gets defensive or tries to discredit the testing lab? That tells you everything. 🎯

One last pro tip: when you get your results, share them here (anonymized if you want). Community-sourced testing data is one of the most valuable resources we have. Every data point helps everyone make better decisions. We maintain a community testing database spreadsheet — link is in the sidebar — where members voluntarily contribute their results. Over 200 entries so far across multiple pharmacies.

Knowledge is power. Test your stuff. 💪🔬