AssayIndex
Cross-section

GHRP-6 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 GHRP-6, with a class minimum gradient of 15 min, the method is a live explanation.

206 recordsmedian 99.54 %spec 99.0 %
LaboratoryReportsGradientMS resolutionMedian purity %Published bias (pp)Bias-adjustedMethod suitability
Janoshik8630minHigh99.55+0.0099.55ADEQUATE
PeptideMeter4228minHigh99.50-0.0599.55ADEQUATE
Medutest3525minUnit99.56+0.0899.48ADEQUATE
VendorInvestigate1832minHigh99.59-0.1199.70ADEQUATE
Nordanalyt1535minHigh99.42+0.0299.40ADEQUATE
Kestrel1015minUnit99.88+0.2499.64ADEQUATE
98.398.698.999.299.599.8100.1JanoshikJanoshik: Q1 99.35, median 99.55, Q3 99.75, n=86outlier 98.42outlier 98.42outlier 98.44outlier 98.51outlier 98.52outlier 98.54outlier 98.64outlier 98.64outlier 98.71outlier 98.72n=86PeptideMeterPeptideMeter: Q1 99.28, median 99.50, Q3 99.74, n=42n=42MedutestMedutest: Q1 99.19, median 99.56, Q3 99.90, n=35n=35VendorInvestigateVendorInvestigate: Q1 99.23, median 99.59, Q3 99.91, n=18n=18NordanalytNordanalyt: Q1 99.34, median 99.42, Q3 99.56, n=15outlier 98.43outlier 99.93n=15KestrelKestrel: Q1 99.78, median 99.88, Q3 99.93, n=10outlier 99.18outlier 99.21n=10 Purity (% area)
Figure. GHRP-6 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.