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 | 2 | 5 | 98.93 | 1.39 | 2 | 2 | Backfill quarter. Reports assayed earlier were accepted retrospectively where custody could be documented. |
| 2024-Q2 | 3 | 25 | 99.45 | 0.51 | 3 | 2 | First quarter of live submission. |
| 2024-Q3 | 4 | 14 | 99.06 | 0.21 | 3 | 5 | Nordanalyt Laboratories began contributing. |
| 2024-Q4 | 3 | 20 | 99.01 | 0.60 | 3 | 11 | Impurity-fingerprint matching introduced; first shared-bulk links published. |
| 2025-Q1 | 11 | 62 | 99.49 | 0.99 | 10 | 6 | Anomaly rule set expanded from seven rules to eleven. |
| 2025-Q2 | 3 | 20 | 99.03 | 0.40 | 3 | 2 | Gravimetric mass-balance reconciliation became mandatory on new records. |
| 2025-Q3 | 14 | 104 | 99.10 | 0.78 | 11 | 39 | Kestrel Bioanalytical began contributing; gradient-length normalisation introduced. |
| 2025-Q4 | 12 | 66 | 99.58 | 1.06 | 9 | 7 | Provenance classification became a required field. |
| 2026-Q1 | 9 | 43 | 99.59 | 0.57 | 9 | 11 | Rule AX-R12 added. Dataset v2 schema published. |
| 2026-Q2 | 20 | 131 | 98.87 | 1.03 | 14 | 60 | Buyer-sourced sensitivity analysis added to every supplier scorecard. |
| 2026-Q3 | 4 | 20 | 98.56 | 0.48 | 3 | 16 | 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.