What question did this study set out to answer?

To determine whether immature platelet fraction (IPF) can guide testing for anti-platelet IgG positivity in thrombocytopenic patients.

December 8, 2025BloodOpen Access

Immature platelet fraction as a pre‑test probability marker for anti‑platelet IgG positivity in thrombocytopenia

View Full Paper

Ask AI

Bookmark

Authors

Retrospective analysis shows immature platelet fraction predicts anti-platelet IgG positivity in thrombocytopenia, suggesting its clinical utility.

To determine whether immature platelet fraction (IPF) can guide testing for anti-platelet IgG positivity in thrombocytopenic patients.
Retrospective study of adult patients with platelet counts ≤150 × 10^9/L
Measured immature platelet fraction using Sysmex XN analyzers
Conducted anti-platelet IgG testing via direct flow cytometry
Analyzed data using logistic regression and ROC/AUC methods
Performed decision-curve analysis to assess net benefit
Among 376 patients, median IPF was higher in antibody-positive group (10.0% vs 7.25%)
ROC AUC for IPF was 0.614, with sensitivity of 0.659 and specificity of 0.535
In severe thrombocytopenia subgroup (<30 × 10⁹/L), AUC improved to 0.726 with high specificity at high cutoffs
Decision-curve analysis indicated modest benefit for IPF-guided triage only at high pre-test probabilities

Elizabeth Xisto Souto (2025) studied this question.

View Full Paper

Ask AI

Bookmark

Retrospective analysis shows immature platelet fraction predicts anti-platelet IgG positivity in thrombocytopenia, suggesting its clinical utility.