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Absolute Lymphocyte & Eosinophil Count

Absolute lymphocyte and eosinophil counts from the white cell count and differential.

For healthcare professionalsHematologyv1.0.1

For healthcare professionals / clinical use. Not a self-diagnosis tool.

Your measurements

×10⁹/L
%
%

Calculated on your device. Nothing is sent to a server.

Your result will appear here

Enter your measurements, then press Calculate.

Methodology

Absolute count from differential

absolute = WBC × percentage ÷ 100

Absolute counts are more meaningful than percentages when the total white cell count is abnormal.

Who it is for
Adults and children with a differential white cell count.
Version
1.0.1

How this calculator works

The inputs

  • Absolute counts come from the total white cell count and the differential; the ICSH 2014 guideline sets out how analysers that produce differential leucocyte counts should be evaluated before use.[1]

Sources

  1. Briggs C, Culp N, Davis B, et al. ICSH guidelines for the evaluation of blood cell analysers including those used for differential leucocyte and reticulocyte counting. Int J Lab Hematol. 2014;36(6):613–627. doi:10.1111/ijlh.12201

Compiled from the published sources above. Every statement was agreed independently by three AI research tools (Claude, ChatGPT, DeepSeek) and its source verified in PubMed or Crossref by the Hakeemly editorial team. Not reviewed by a doctor unless stated. Agreed on

Worked example: how to calculate ALC / AEC

Inputs

White blood cell count
6 ×10⁹/L
Lymphocytes
30 %
Eosinophils (optional)
2 %

Result

Absolute lymphocyte count
1.8 ×10⁹/L
Absolute eosinophil count
0.12 ×10⁹/L

An illustration with sample values, worked out with the same method the tool above uses.

Limitations

  • Manual differentials have counting error at low cell numbers.

References

  1. Briggs C, Culp N, Davis B, et al. ICSH guidelines for the evaluation of blood cell analysers including those used for differential leucocyte and reticulocyte counting. Int J Lab Hematol. 2014;36(6):613–627. doi:10.1111/ijlh.12201

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