AssayIndex
Cross-section

Triptorelin 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 Triptorelin, with a class minimum gradient of 15 min, the method is a live explanation.

10 recordsmedian 98.47 %spec 98.5 %
LaboratoryReportsGradientMS resolutionMedian purity %Published bias (pp)Bias-adjustedMethod suitability
PeptideMeter4 n=428minHigh98.50-0.0598.55ADEQUATE
Janoshik3 n=330minHigh98.52+0.0098.52ADEQUATE
VendorInvestigate1 n=132minHigh98.01-0.11ADEQUATE
Nordanalyt1 n=135minHigh98.41+0.02ADEQUATE
Kestrel1 n=115minUnit99.28+0.24ADEQUATE
Medutest025minUnit+0.08ADEQUATE
97.798.198.598.999.399.7100.1JanoshikJanoshik: Q1 98.45, median 98.52, Q3 99.22, n=3n=3PeptideMeterPeptideMeter: Q1 98.17, median 98.50, Q3 98.85, n=4n=4 Purity (% area)
Figure. Triptorelin 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.