AssayIndex
Cross-section

Vilon by laboratory

The same compound measured by different laboratories on different gradients. Where the medians differ, the question is whether the material differed or the method did — and for Vilon, with a class minimum gradient of 15 min, the method is a live explanation.

17 recordsmedian 99.65 %spec 99.0 %
LaboratoryReportsGradientMS resolutionMedian purity %Published bias (pp)Bias-adjustedMethod suitability
Janoshik6 n=630minHigh99.61+0.0099.61ADEQUATE
Medutest4 n=425minUnit99.93+0.0899.85ADEQUATE
Nordanalyt3 n=335minHigh99.26+0.0299.24ADEQUATE
VendorInvestigate2 n=232minHigh98.17, 99.65-0.11—ADEQUATE
Kestrel2 n=215minUnit99.15, 99.78+0.24—ADEQUATE
PeptideMeter028minHigh—-0.05—ADEQUATE
98.098.498.799.199.499.7100.1JanoshikJanoshik: Q1 99.19, median 99.61, Q3 99.91, n=6n=6MedutestMedutest: Q1 99.75, median 99.93, Q3 99.93, n=4outlier 99.21n=4VendorInvestigateVendorInvestigate: Q1 98.54, median 98.91, Q3 99.28, n=2n=2NordanalytNordanalyt: Q1 98.82, median 99.26, Q3 99.59, n=3n=3KestrelKestrel: Q1 99.31, median 99.47, Q3 99.62, n=2n=2 Purity (% area)
Figure. Vilon purity by contributing laboratory. Any offset between rows has two possible sources — a real difference in the material each laboratory happened to receive, and the laboratory's own bias — and this figure cannot separate them. The paired analysis that can is on inter-lab agreement.