Related Experiment Video
Updated: Jul 7, 2026

Nitropeptide Profiling and Identification Illustrated by Angiotensin II
Published on: June 16, 2019
Amino-terminal pro-B-type natriuretic peptide: analytic considerations
Jordi Ordonez-Llanos1, Paul O Collinson, Robert H Christenson
1Biochemistry Service, Hospital de la Santa Creu i Sant Pau, and the Department of Biochemistry and Molecular Biology, Universitat Autònoma, Barcelona, Spain.
Amino-terminal pro-B-type natriuretic peptide (NT-proBNP) testing offers laboratory convenience due to its stability and assay harmony. Understanding population-specific reference values and biologic variability is crucial for accurate NT-proBNP interpretation.
Area of Science:
- Clinical Chemistry
- Biomarker Analysis
- Laboratory Medicine
Background:
- Amino-terminal pro-B-type natriuretic peptide (NT-proBNP) is a widely used biomarker in clinical diagnostics.
- NT-proBNP assays exhibit excellent preanalytic and analytic characteristics, including stability and inter-assay harmony.
Purpose of the Study:
- To review the laboratory aspects of NT-proBNP testing.
- To highlight the importance of preanalytic, analytic, and biologic factors in NT-proBNP assay interpretation.
Main Methods:
- Review of laboratory advantages of NT-proBNP assays.
- Discussion of factors influencing NT-proBNP reference values.
- Analysis of biologic variability in NT-proBNP levels.
Main Results:
- NT-proBNP assays demonstrate excellent stability, sample flexibility, and assay harmony.
- Reference values are population-dependent, with higher values relevant in acute dyspnea and diseased populations.
- Biologic variability of NT-proBNP in stable heart failure ranges from 25%-40%.
Conclusions:
- NT-proBNP is a practical biomarker for clinical laboratories.
- Accurate interpretation requires consideration of population-specific reference ranges and biologic variability.
Related Concept Videos
Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include:
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
Physical Properties of Amines
Amines: Introduction
Adrenergic Receptors: ɑ Subtype
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase C—inositol-1,4,5-trisphosphate...
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme (ECE). Of...

