A longitudinal set of retail purchases from one supplier across four quarters is the strongest supplier-level evidence available. Several contributors here are building exactly that.
quarter_over_quarter
Longitudinal supplier tracking. Suspicious of trends shorter than four quarters.
Section 1
Contribution
Both submits records and annotates other people's.
Records submitted
5
n=5
Annotations
205
n=205
Median purity submitted
98.96%
n=5
Suppliers covered
4
n=5
Section 2
Records submitted
A submitter chose to buy this material and to pay for this assay. That choice is the selection mechanism behind the whole index and it is not random.
| Report | Compound | Supplier | Lot | Lab | Quarter | Purity % | Water % | Recovery % | Provenance | Flags | Result |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AX-2026-043170 | BPC-157 | GL Biochem | GLBI-2602-T8050 | Janoshik | 2026-Q2 | 98.68 | 4.71 | — | Buyer-sourced | 1 | MARGINAL |
| AX-2025-019482 | SS-31 (Elamipretide) | JEEP | JEEP-2511-B8241 | Janoshik | 2025-Q4 | 99.65 | 5.29 | 107.4 | Buyer-sourced | 0 | PASS |
| AX-2025-020072 | IGF-1 LR3 | SWB | SWB-2505-N7884 | Medutest | 2025-Q4 | 97.36 | 6.58 | 86.0 | Laboratory-retained | 1 | MARGINAL |
| AX-2025-019515 | GHRP-6 | JEEP | JEEP-2503-B8635 | Janoshik | 2025-Q2 | 99.58 | 4.98 | 105.2 | Buyer-sourced | 0 | PASS |
| AX-2025-018808 | Exenatide | FGP | FGP-2504-V8032 | VendorInvestigate | 2025-Q2 | 98.96 | 4.09 | — | Buyer-sourced | 1 | MARGINAL |
| Supplier | Records | Median purity |
|---|---|---|
| JEEP | 2 | n<3 |
| GL Biochem | 1 | n<3 |
| SWB | 1 | n<3 |
| FGP | 1 | n<3 |
Section 3
Annotations
Signed technical comments on records. The index does not moderate annotations for agreement with its own arithmetic, and several of these disagree with it. Where a handle has made the same point on several records, one instance is shown and the rest are reachable from the records themselves.
If a rounding convention changes mid-series the certificates become non-comparable across the change. Worth checking the timeline page before pooling declared figures from different quarters.
Where a supplier's supplier-supplied and buyer-sourced series both run across four quarters, the two lines are comparable. The timeline page carries them.
Single records do not establish trends. Where this supplier's quarterly medians are stable across four quarters, a result like this reads as the process rather than the draw — and the timeline page is where to check that.
Showing 4 distinct comments of 205 annotations by this handle.