BPC-157 by quarter
Coverage and results for BPC-157 quarter by quarter. Read the supplier-count column beside the median: a quarter where the compound mix changed is not comparable with the one before it, and the index cannot hold that constant retrospectively.
| Quarter | Batches | Reports | Median purity % | IQR pp | Suppliers | Flagged | What changed in the index |
|---|---|---|---|---|---|---|---|
| 2024-Q1 | 1 | 2 | 98.29, 97.98 | — | 1 | 2 | Backfill quarter. Reports assayed earlier were accepted retrospectively where custody could be documented. |
| 2024-Q2 | 3 | 18 | 99.41 | 0.56 | 3 | 16 | First quarter of live submission. |
| 2024-Q3 | 7 | 46 | 99.04 | 1.11 | 6 | 38 | Nordanalyt Laboratories began contributing. |
| 2024-Q4 | 5 | 28 | 98.95 | 1.29 | 4 | 21 | Impurity-fingerprint matching introduced; first shared-bulk links published. |
| 2025-Q1 | 11 | 64 | 99.41 | 1.00 | 7 | 54 | Anomaly rule set expanded from seven rules to eleven. |
| 2025-Q2 | 7 | 49 | 99.19 | 0.85 | 6 | 43 | Gravimetric mass-balance reconciliation became mandatory on new records. |
| 2025-Q3 | 12 | 71 | 99.35 | 0.66 | 9 | 63 | Kestrel Bioanalytical began contributing; gradient-length normalisation introduced. |
| 2025-Q4 | 11 | 78 | 98.91 | 1.03 | 8 | 72 | Provenance classification became a required field. |
| 2026-Q1 | 11 | 85 | 98.95 | 1.18 | 10 | 73 | Rule AX-R12 added. Dataset v2 schema published. |
| 2026-Q2 | 21 | 125 | 98.89 | 1.54 | 13 | 120 | Buyer-sourced sensitivity analysis added to every supplier scorecard. |
| 2026-Q3 | 5 | 25 | 99.22 | 1.12 | 4 | 23 | Quarter in progress. Aggregates for this quarter are provisional. |
Median purity by quarter
Quarters with fewer than two purity records are gaps in the line rather than zeroes. A trend across 11 points, most of them thin, is a shape and not a finding.