Hypertrophic Cardiomyopathy: The Time-Synchronized Relationship between Ischemia and Left Ventricular Dysfunction Assessed by Highly Sensitive Troponin I and NT-proBNP

Table 2

NT-proBNP test repeatability and intralaboratory precision.

NT-proBNP		Assay output requirements
pg/ml	pmol/l	Repeatability (within the same series) (CV (%))	Intralaboratory precision (total) (CV (%))
100-500	11.8–59.0	≤5%	≤8%
>500	>59,0	≤7%	≤10%

Precision was assessed in accordance with the EP05-A3 protocol of the Clinical and Laboratory Standards Institute (CLSI): “Evaluation of Precision of Quantitative Measurement Procedures; Approved Guidelines—Third Edition” (CLSI Document EP05-A3).