Archives of Advances in Biosciences

Vol. 17 No. 1 (2026)

A Novel Parameter Derived from Platelet Histograms: Pre-Peak to Post-Peak Ratio and Its Correlation with Platelet Recovery in Thrombocytopenic Patients

Archives of Advances in Biosciences, Vol. 17 No. 1 (2026), 28 April 2026 , Page 1-8
https://doi.org/10.22037/aab.v17i1.51312

Abstract

Background and Aim: Automated hematology analyzers generate platelet indices and histograms that can provide insight into platelet dynamics. This study evaluates a novel parameter—the pre-peak to post-peak ratio from platelet histograms—and its associations with the percentage of giant platelet, standard platelet indices, and clinical recovery in patients with thrombocytopenia.

Methods: In an observational cohort study, 250 thrombocytopenic patients (platelet count <150,000/μL) were monitored over six days at a tertiary care center. Platelet histograms were analyzed using a 5-part automated hematology analyzer. The pre-peak/post-peak ratio was manually calculated, and its correlations with mean platelet volume (MPV), platelet distribution width (PDW), giant platelet percentage (from peripheral smears), and platelet recovery were assessed.

Results: Hyper-destructive thrombocytopenia predominated (82.4%, n=206), with dengue identified as the leading cause (53.9%). In these cases, giant platelet percentages surged by day 3 (p<0.001), positively correlating with post-peak length and inversely with the ratio. The ratio declined on day 3 and rose on day 6 in 82.4% of recovering patients. In contrast, hypo-productive cases (17.6%, n=44) showed no significant changes or correlations.

Conclusion: The pre-peak to post-peak ratio appears to be a simple and economical prognostic indicator for recovery in hyper-destructive thrombocytopenia, potentially guiding transfusion decisions and monitoring.

Keywords:
  • hrombocytopenia
  • Platelet histogram
  • Giant platelets
  • Mean platelet volume
  • Platelet distribution width
  • Platelet recovery
  • Dengue
  • Immune thrombocytopenic purpura

How to Cite

Gill, S. G., Batra, H., & Muralidharan, S. (2026). A Novel Parameter Derived from Platelet Histograms: Pre-Peak to Post-Peak Ratio and Its Correlation with Platelet Recovery in Thrombocytopenic Patients . Archives of Advances in Biosciences, 17(1), 1–8. https://doi.org/10.22037/aab.v17i1.51312

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