AssayIndex

KP-2406-K5818

IGF-1 LR3 · 0.1 mg declared · Zhuhai Kerui Biotechnology Co., Ltd. · manufactured 20 Jun 2024

CHARACTERISED
Lot code
KP-2406-K5818
Supplier
KP — Zhuhai Kerui Biotechnology Co., Ltd.
Compound
IGF-1 LR3
Compound class
Growth-hormone axis peptides
Declared label claim
0.10mg
Manufacture date
20 Jun 2024
Index quarter
2024-Q3
Independent assays
13
Laboratories involved
Nordanalyt, PeptideMeter, Janoshik, Medutest, VendorInvestigate
Provenance mix
Buyer-sourced ×12 · Supplier-supplied ×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 13
Median purity 98.06% n=13
Spread (max − min) 1.04pp n=13
Standard deviation 0.311pp n=13
96.497.097.798.398.999.5100.1This lot (KP-2406-K5818)This lot (KP-2406-K5818): Q1 97.80, median 98.06, Q3 98.25, n=13n=13All IGF-1 LR3All IGF-1 LR3: Q1 97.63, median 97.97, Q3 98.33, n=139outlier 99.59outlier 99.74outlier 99.84n=139 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 13

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-2024-005201KP-2406-K5818Nordanalyt2024-Q397.806.32Buyer-sourced0PASS
AX-2024-005202KP-2406-K5818PeptideMeter2024-Q398.396.06105.0Buyer-sourced0PASS
AX-2024-005203KP-2406-K5818Janoshik2024-Q398.086.60Buyer-sourced0PASS
AX-2024-005204KP-2406-K5818PeptideMeter2024-Q397.976.0296.0Buyer-sourced0PASS
AX-2024-005205KP-2406-K5818Nordanalyt2024-Q398.066.2096.0Buyer-sourced0PASS
AX-2024-005206KP-2406-K5818Janoshik2024-Q398.256.27Buyer-sourced0PASS
AX-2024-005207KP-2406-K5818Janoshik2024-Q397.995.8895.0Buyer-sourced0PASS
AX-2024-005208KP-2406-K5818Medutest2024-Q397.786.57Buyer-sourced0PASS
AX-2024-005209KP-2406-K5818Janoshik2024-Q397.795.81101.0Buyer-sourced0PASS
AX-2024-005210KP-2406-K5818VendorInvestigate2024-Q398.126.53Buyer-sourced0PASS
AX-2024-005211KP-2406-K5818VendorInvestigate2024-Q398.615.94105.0Buyer-sourced0PASS
AX-2024-005212KP-2406-K5818Janoshik2024-Q398.556.29Supplier-supplied0PASS
AX-2024-005213KP-2406-K5818Medutest2024-Q397.576.0995.0Buyer-sourced0PASS
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
Nordanalyt297.80, 98.0697.9335min+0.0297.91
PeptideMeter298.39, 97.9798.1828min-0.0598.23
Janoshik598.08, 98.25, 97.99, 97.79, 98.5598.0830min+0.0098.08
Medutest297.78, 97.5797.6725min+0.0897.59
VendorInvestigate298.12, 98.6198.3732min-0.1198.48

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)98.0897.80divergence +0.02 pp vs batch median
Total impurities (% area)1.922.20
Largest single impurity (% area)not stated1.25
Water (%)4.46.32
Counter-ion (%)not stated6.17
Peptide content (%w/w)not statednot determined
Endotoxin (EU/mg)not statednot determined
Method stated on certificateNOno method section — the result cannot be reconciled against any other
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
oxidised Met59 (+16 Da)13 / 130.790.24–1.37
disulfide-scrambled isomer13 / 130.690.40–1.51
des-13-residue N-extension (native IGF-1)13 / 130.140.06–0.25
truncated (1-70)13 / 130.060.04–0.08
aggregated dimer13 / 130.040.02–0.17
Section 7

What this rollup does not establish