AssayIndex

SWB-2505-N5257

IGF-1 LR3 · 0.1 mg declared · Shanghai Wibson Biotechnology Co., Ltd. · manufactured 08 May 2025

CHARACTERISED
Lot code
SWB-2505-N5257
Supplier
SWB — Shanghai Wibson Biotechnology Co., Ltd.
Compound
IGF-1 LR3
Compound class
Growth-hormone axis peptides
Declared label claim
0.10mg
Manufacture date
08 May 2025
Index quarter
2025-Q4
Independent assays
11
Laboratories involved
VendorInvestigate, Medutest, Janoshik, Kestrel, Nordanalyt
Provenance mix
Buyer-sourced ×2 · Supplier-supplied ×8 · Laboratory-retained ×1
Section 1

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.

Independent assays 11
Median purity 97.00% n=11
Spread (max − min) 1.32pp n=11
Standard deviation 0.366pp n=11
95.896.597.197.898.599.199.8This lot (SWB-2505-N5257)This lot (SWB-2505-N5257): Q1 96.87, median 97.00, Q3 97.15, n=11outlier 96.06n=11All IGF-1 LR3All IGF-1 LR3: Q1 97.30, median 97.75, Q3 98.33, n=86n=86 Purity (% area)
Figure 1. This lot's independent purity results against the whole IGF-1 LR3 record set in the index. The vertical line is the index acceptance specification for the growth-hormone axis peptides class, 95.0 % area. A narrow box on the top row against a wide box on the bottom row is the ideal reading: it means the disagreement between lots is much larger than the disagreement within this one.
Section 2

Member reports 11

Every report the index holds on this lot. Each is a page carrying its own chromatogram, mass spectrum, mass balance, provenance and caveats.

ReportLotLabQuarterPurity %Water %Recovery %ProvenanceFlagsResult
AX-2025-019919SWB-2505-N5257VendorInvestigate2025-Q496.626.89Buyer-sourced0PASS
AX-2025-019920SWB-2505-N5257Medutest2025-Q497.386.59102.0Supplier-supplied0PASS
AX-2025-019921SWB-2505-N5257Janoshik2025-Q497.036.49111.0Laboratory-retained1MARGINAL
AX-2025-019922SWB-2505-N5257Janoshik2025-Q497.336.5494.0Supplier-supplied0PASS
AX-2025-019923SWB-2505-N5257Kestrel2025-Q496.836.36Supplier-supplied0PASS
AX-2025-019924SWB-2505-N5257VendorInvestigate2025-Q496.066.70Buyer-sourced0PASS
AX-2025-019925SWB-2505-N5257Nordanalyt2025-Q497.006.94Supplier-supplied0PASS
AX-2025-019926SWB-2505-N5257Janoshik2025-Q496.906.74Supplier-supplied0PASS
AX-2025-019927SWB-2505-N5257Janoshik2025-Q496.956.20101.0Supplier-supplied0PASS
AX-2025-019928SWB-2505-N5257Janoshik2025-Q497.137.00101.0Supplier-supplied0PASS
AX-2025-019929SWB-2505-N5257Janoshik2025-Q497.176.54Supplier-supplied0PASS
Section 3

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.

LaboratoryReportsPurity results (% area)MedianGradientPublished bias (pp)Bias-adjusted
VendorInvestigate296.62, 96.0696.3432min-0.1196.45
Medutest197.3897.3825min+0.0897.30
Janoshik697.03, 97.33, 96.90, 96.95, 97.13, 97.1797.0830min+0.0097.08
Kestrel196.8396.8315min+0.2496.59
Nordanalyt197.0097.0035min+0.0296.98

This lot contributes 10 paired comparisons to the inter-lab analysis.

Section 4

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.

FigureSupplier COAThis reportIndex note
Purity (% area)97.4096.62divergence +0.40 pp vs batch median
Total impurities (% area)not stated3.38
Largest single impurity (% area)not stated1.51
Water (%)5.36.89
Counter-ion (%)5.95.19
Peptide content (%w/w)88.2not determined
Endotoxin (EU/mg)0.29not determined
Method stated on certificateYEScolumn, gradient and wavelength given
Section 5

Impurity fingerprint

The named impurities reported across this lot's assays, with how consistently each was seen. A fingerprint is what allows two lot numbers held by different companies to be identified as one bulk.

Named impurityReported inMedian % areaRange
aggregated dimer11 / 111.270.14–1.51
disulfide-scrambled isomer11 / 110.780.52–0.91
oxidised Met59 (+16 Da)11 / 110.500.18–0.60
des-13-residue N-extension (native IGF-1)11 / 110.220.19–2.06
truncated (1-70)11 / 110.140.11–0.62
Section 7

What this rollup does not establish