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Although quality control standards are recommended to ensure accurate test results, the coefficient of variation for the FVC and FEV 1 biologic quality control (BioQC) is not specified. The primary aim of this study was to evaluate variations in spirometry BioQCs in a large and diverse cohort of individuals to determine an acceptable standard for the coefficient of variation.

Variations in FVC and FEV1 Biologic Quality Control Measures in a Global Multi-Center Clinical Trial

Variations in FVC and FEV₁ Biologic Quality Control Measures in a Global Multi-Center Clinical Trial