Absolutely agree. I test roughly every other order, which is why I have 14 data points over ~12 orders. The $120 Janoshik fee on a $250-400 order is a 30-50% overhead, but it's non-negotiable for me. I would never run a peptide subcutaneously without at least one verified test from that vendor within recent history. The moment I see a significant downward deviation — say, a batch coming back below 97% — I'll flag it here immediately. That's the social contract of sharing data in this community.

The quality improvement is great, but has anyone tracked price changes over the same period? I started ordering in mid-2025 so I only know recent pricing. What were WWB prices in early 2024? If quality went up but so did prices proportionally, that changes the value calculation. Not that I'd complain — I'll pay more for 99% vs 97%.

Good question. Here's the pricing evolution from my records: Semaglutide 10mg (10-unit order): - Q2 2024: $22/vial - Q4 2024: $24/vial - Q2 2025: $26/vial - Q4 2025: $28/vial - Q1 2026: $28/vial Tirzepatide 30mg (10-unit order): - Q3 2024: $26/vial - Q4 2024: $28/vial - Q2 2025: $30/vial - Q4 2025: $32/vial - Q1 2026: $32/vial (with bulk discounts dropping to $26 at 15+) So prices have gone up about 25-30% over two years. However, purity improved from ~97% to ~99%, which means you're getting more *active* peptide per vial. Adjusted for purity, the effective price increase is more like 20-23%. Factor in general inflation and rising precursor costs in China, and the value proposition has actually stayed roughly flat. Not worse, not dramatically better. Stable. Compare that to domestic US compounding pharmacies that were charging $300-500 for comparable tirz doses before the FDA crackdown. We're still operating in a completely different price universe.

This thread convinced me. I placed my first WWB order yesterday — 5x sema 10mg at $28/vial. Plan to send one vial to Janoshik when it arrives. If I get anything in the 98-99% range that matches the recent data here, I'll be a convert. The longitudinal tracking approach is really smart. Individual test results are snapshots, but a trend line actually tells you about the vendor's trajectory. More buyers should do this.

Welcome to the tested-peptide club. One tip: when you submit to Janoshik, request the full chromatogram PDF, not just the summary certificate. The chromatogram shows you the entire peak profile — you can see baseline separation, peak symmetry, and any minor impurity peaks that might not make it into the summary. It's the same price but gives you way more information. — thanks for this data. I'm going to add your historical results to the community spreadsheet with your permission. This is exactly the kind of longitudinal vendor quality data that helps everyone make informed decisions. We need more people doing what you're doing.