AssayIndex
Cross-section

ARA-290 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 ARA-290, with a class minimum gradient of 15 min, the method is a live explanation.

91 recordsmedian 99.42 %spec 98.0 %
LaboratoryReportsGradientMS resolutionMedian purity %Published bias (pp)Bias-adjustedMethod suitability
Janoshik4130minHigh99.42+0.0099.42ADEQUATE
PeptideMeter2128minHigh99.50-0.0599.55ADEQUATE
Medutest1125minUnit99.40+0.0899.32ADEQUATE
Nordanalyt835minHigh99.53+0.0299.51ADEQUATE
VendorInvestigate6 n=632minHigh99.08-0.1199.19ADEQUATE
Kestrel4 n=415minUnit99.63+0.2499.39ADEQUATE
97.698.098.598.999.399.7100.1JanoshikJanoshik: Q1 99.20, median 99.42, Q3 99.81, n=41outlier 98.04outlier 98.21outlier 98.27n=41PeptideMeterPeptideMeter: Q1 99.21, median 99.50, Q3 99.72, n=21outlier 98.32outlier 98.38n=21MedutestMedutest: Q1 99.20, median 99.40, Q3 99.93, n=11n=11VendorInvestigateVendorInvestigate: Q1 99.00, median 99.08, Q3 99.27, n=6outlier 97.80n=6NordanalytNordanalyt: Q1 99.28, median 99.53, Q3 99.81, n=8outlier 98.22n=8KestrelKestrel: Q1 99.49, median 99.63, Q3 99.73, n=4n=4 Purity (% area)
Figure. ARA-290 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.