Platelet-to-Lymphocyte Ratio Calculator

Calculate the platelet-to-lymphocyte ratio as an inflammation marker.

Aug 31, 2026 Hematology #plr #ratio #inflammation

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All fields required unless noted

Platelet count (10^9/L)

Absolute lymphocyte count (10^9/L)

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Formula & Clinical Notes

Formula

PLR = Platelet Count / Absolute Lymphocyte Count

Clinical Notes

The platelet-to-lymphocyte ratio is an emerging systemic inflammation marker studied in oncology and cardiovascular disease. Values are interpreted in the clinical context; there is no universally accepted normal range.

Sources

Platelet-to-lymphocyte ratio as a prognostic biomarker