Platelet Indices in Acquired Thrombocytopenia: A Diagnostic and Prognostic Evaluation
Background Thrombocytopenia, defined as a platelet count below 150,000/cmm, is a frequent hematological condition with potentially life-threatening consequences. It can result from either hyperdestructive thrombocytopenia (increased platelet breakdown) or hypoproductive thrombocytopenia (decreased platelet production). Bone marrow examination is the gold standard for differentiating these causes, but it is invasive. Recent advances in automated hematology analyzers have enabled the measurement of platelet indices such as MPV (Mean Platelet Volume), PDW (Platelet Distribution Width), and P-LCR (Platelet Large Cell Ratio), which may help in distinguishing thrombocytopenia subtypes in a non-invasive manner. Methods This prospective cross-sectional study included 80 thrombocytopenic patients, classified into two groups: 49 with hypoproductive thrombocytopenia and 31 with hyperdestructive thrombocytopenia. Additionally, 20 age- and sex-matched healthy individuals served as a control group. All patients underwent clinical evaluation, CBC (Complete Blood Count) analysis using an automated hematology analyzer (Sysmex XN-1000), peripheral smear examination, and bone marrow aspiration where necessary. Platelet indices (MPV, PDW, and P-LCR) were measured and correlated with the underlying cause of thrombocytopenia. Results Statistical analysis showed significant differences in platelet indices between the two groups. Patients with hyperdestructive thrombocytopenia (e.g., Immune Thrombocytopenic Purpura) had significantly higher MPV, PDW, and P-LCR compared to those with hypoproductive thrombocytopenia. ROC (Receiver Operating Characteristic) curve analysis established cutoff values for these indices, which demonstrated good sensitivity and specificity in differentiating thrombocytopenia subtypes. A strong correlation was observed between MPV and PDW in both groups. Conclusion Platelet indices, particularly MPV, PDW, and P-LCR, provide valuable insights into the etiology of thrombocytopenia. These indices can serve as reliable, cost-effective, and non-invasive alternatives to bone marrow examination for differentiating hypoproductive from hyperdestructive thrombocytopenia. Their routine use in clinical practice may improve diagnostic accuracy and patient management, reducing the need for invasive procedures