Future needs and expected trends in peripheral blood cell analysis: erythrocyte histograms

Area of Science:

• Hematology
• Clinical Pathology
• Medical Diagnostics

Background:

• Erythrocyte histograms provide valuable information for diagnosing blood disorders and monitoring treatment efficacy.
• Standardized analysis protocols are crucial for reliable interpretation of histogram data.

Purpose of the Study:

• To outline the recommended protocol for analyzing erythrocyte histograms according to the International Council for Standardization in Hematology (ICSH).
• To demonstrate how detailed histogram analysis assists in patient diagnosis and treatment monitoring.
• To evaluate the utility of histograms generated from different measurement systems.

Main Methods:

• Analysis of erythrocyte histograms using the ICSH-recommended protocol.
• Generation of histograms from blood films, aperture-impedance, and light-scatter volume measurements.
• Evaluation of histogram parameters including red cell populations, central tendency, dispersion, and microcytosis/macrocytosis.

Main Results:

• ICSH protocol enables determination of red cell populations, their proportions, central tendency, dispersion, and micro/macrocytic content.
• Histograms can be generated from blood films or automated volume measurements, though agreement between systems is poor.
• Current automated instruments may not offer superior information compared to blood films without improvements.

Conclusions:

• Adherence to the ICSH protocol for erythrocyte histogram analysis enhances diagnostic accuracy.
• Automated instruments require refinement to reduce artefacts for improved histogram utility.
• Systematic examination of histograms, following ICSH guidelines, maximizes the diagnostic potential of complete blood counts.