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Reticulocytes: reference limits

P Tarallo1, J C Humbert, B Fournier

  • 1Centre de Medecine Preventive, Vandoeuvre-Les-Nancy, France.

Clinical and Laboratory Haematology
|December 1, 1996
PubMed
Summary
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Healthy reference ranges for reticulocyte counts were established in 1219 individuals. Sex-specific differences were observed in adults over 20, but not in adolescents aged 4-19.

Area of Science:

  • Hematology
  • Clinical Pathology
  • Reference Range Establishment

Background:

  • Reticulocytes, immature red blood cells, are crucial indicators of erythropoiesis.
  • Establishing precise reference ranges for reticulocyte counts and subpopulations is vital for accurate clinical assessment.
  • Understanding age- and sex-specific variations is essential for interpreting these counts.

Purpose of the Study:

  • To establish healthy reference ranges for total peripheral reticulocyte count and its subpopulations (LFR, MFR, HFR).
  • To investigate potential age- and sex-based differences in these reference ranges.

Main Methods:

  • Analysis of peripheral blood samples from 1219 healthy subjects.
  • Quantification of total reticulocyte count and fluorescence intensity subpopulations (Low Fluorescence Ratio - LFR, Middle Fluorescence Ratio - MFR, High Fluorescence Ratio - HFR).

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  • Stratification of data by age (4-19 years, >20 years) and sex.

    • Main Results:

    • Healthy reference ranges were successfully established for total reticulocyte count and its subpopulations.
    • Significant differences in reference ranges were observed between males and females in individuals over 20 years old.
    • No significant sex-based differences in reference ranges were found in the younger age group (4-19 years).

    Conclusions:

    • This study provides essential reference ranges for reticulocyte subpopulations in a healthy population.
    • Age- and sex-specific reference ranges are recommended for adults (>20 years) for improved diagnostic accuracy.
    • Further research may explore the clinical implications of these sex-specific differences in erythropoiesis.