ERP-2411-Y6431
Follistatin-344 · 0.1 mg declared · Shanghai ERP Biotechnology Co., Ltd. · manufactured 10 Nov 2024
- Lot code
- ERP-2411-Y6431
- Supplier
- ERP — Shanghai ERP Biotechnology Co., Ltd.
- Compound
- Follistatin-344
- Compound class
- Growth-hormone axis peptides
- Declared label claim
- 0.10mg
- Manufacture date
- 10 Nov 2024
- Index quarter
- 2025-Q1
- Independent assays
- 5
- Laboratories involved
- Nordanalyt, Medutest, VendorInvestigate
- Provenance mix
- Buyer-sourced ×2 · Supplier-supplied ×3
Reproducibility across independent tests
Every report below is an observation of the same physical material. What they disagree about is measurement; what they agree about is the lot. The size of the disagreement is compared against what the contributing laboratories' own repeatability figures predict.
A distribution figure needs at least two independent purity results on the lot. This lot has 0.
Member reports 5
Every report the index holds on this lot. Each is a page carrying its own chromatogram, mass spectrum, mass balance, provenance and caveats.
| Report | Lot | Lab | Quarter | Purity % | Water % | Recovery % | Provenance | Flags | Result |
|---|---|---|---|---|---|---|---|---|---|
| AX-2025-019993 | ERP-2411-Y6431 | Nordanalyt | 2025-Q1 | N/A | 3.72 | — | Supplier-supplied | 1 | N/A |
| AX-2025-019994 | ERP-2411-Y6431 | Medutest | 2025-Q1 | N/A | 2.74 | — | Buyer-sourced | 1 | N/A |
| AX-2025-019995 | ERP-2411-Y6431 | Medutest | 2025-Q1 | N/A | 2.81 | — | Supplier-supplied | 1 | N/A |
| AX-2025-019996 | ERP-2411-Y6431 | Medutest | 2025-Q1 | N/A | 2.97 | — | Supplier-supplied | 1 | N/A |
| AX-2025-019997 | ERP-2411-Y6431 | VendorInvestigate | 2025-Q1 | N/A | 2.68 | — | Buyer-sourced | 1 | N/A |
By laboratory
Where more than one laboratory assayed this lot, the difference between them is a paired observation of their relative bias — the same material, the same time window, different instruments. Those pairs are what the index's bias estimates are built from.
| Laboratory | Reports | Purity results (% area) | Median | Gradient | Published bias (pp) | Bias-adjusted |
|---|---|---|---|---|---|---|
| Nordanalyt | 1 | no purity figure | — | 35min | +0.02 | — |
| Medutest | 3 | no purity figure | — | 25min | +0.08 | — |
| VendorInvestigate | 1 | no purity figure | — | 32min | -0.11 | — |
This lot contributes 3 paired comparisons to the inter-lab analysis.
The supplier's certificate for this lot
One number the supplier wrote, beside the median of the numbers other people measured on the same physical material. That comparison is only available because the index groups by lot.
| Figure | Supplier COA | This report | Index note |
|---|---|---|---|
| Purity (% area) | 99.0 | N/A | |
| Total impurities (% area) | not stated | N/A | |
| Largest single impurity (% area) | not stated | N/A | |
| Water (%) | 6.3 | 3.72 | |
| Counter-ion (%) | not stated | N/A | |
| Peptide content (%w/w) | not stated | not determined | |
| Endotoxin (EU/mg) | not stated | not determined | |
| Method stated on certificate | NO | — | no method section — the result cannot be reconciled against any other |
The certificate for this lot states no purity figure, so no divergence can be computed.