Related Experiment Video
Updated: Sep 12, 2025

Evaluation of a Point-of-Care Testing Analyzer for Measuring Peripheral Blood Leukocytes
Published on: March 22, 2022
Reference Values
Cole Bowerman1, Sanja Stanojevic2
1Department of Medicine, Queen's University, Kingston, Canada; Department of Community Health and Epidemiology, Dalhousie University, Centre for Clinical Research, 5790 University Avenue, Halifax, NSB3H 1V7, Canada.
Abstract:
Interpretation of measured lung function values relies on reference equations to define the range of values that would be expected in otherwise healthy individuals. Reference equations for lung function can be interpreted in a way similar to pediatric growth charts and incorporate key anthropomorphic determinants of lung health: height, sex, and age. Race and ethnicity were previously included as a determinant of lung function through ethnic specific equations; however, this approach is no longer recommended because the potential harms outweigh the possible benefits. The clinical application of lung function results requires careful consideration of reference equations' derivations and their limitations.
More Related Videos
Related Concept Videos
Guidelines For Measuring Vital Signs
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
Pre-Procedural Guidelines for Assessing Blood Pressure
Chemical Shift: Internal References and Solvent Effects
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...
Critical Values
Drug Concentrations: Measurements
Plasma...
Sensitivity, Specificity, and Predicted Value
Sensitivity is the...

