Related Experiment Video
Updated: Oct 2, 2025
05:49
Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets
Published on: November 29, 2024
764
Diagnosis of Platelet Function Disorders: A Challenge for Laboratories
Miriam Wagner1, Günalp Uzun2, Tamam Bakchoul1,2
1Transfusion Medicine, Faculty of Medicine, University of Tübingen, Tübingen, Germany.
Hamostaseologie
|February 23, 2022
Summary
Diagnosing platelet function defects, often acquired, requires careful evaluation. This review outlines methods from bleeding scores to flow cytometry for accurate diagnosis.
Area of Science:
- Hematology
- Clinical Pathology
Background:
- Platelet function defects are a common cause of bleeding in patients with normal coagulation.
- These defects can be congenital but are more frequently acquired.
- The heterogeneous clinical presentation complicates diagnosis.
Purpose of the Study:
- To review diagnostic approaches for platelet function defects.
- To summarize methods for morphological phenotyping and functional analysis of platelets.
- To highlight challenges in standardization and quality control of diagnostic tests.
Main Methods:
- Standardized bleeding assessment tools (e.g., bleeding score).
- Morphological evaluation of platelets.
- Platelet function assays including light transmission aggregometry, luminoaggregometry, impedance aggregometry, and flow cytometry.
Main Results:
- A variety of tests exist for platelet analysis, but standardization is poor.
- Quality control is often lacking for platelet function tests.
- Current diagnostic tests are typically limited to specialized laboratories.
Conclusions:
- Accurate diagnosis of platelet function defects relies on a combination of bleeding assessment and laboratory testing.
- Effective diagnosis requires strong collaboration between clinical and laboratory teams.
- Despite limitations, flow cytometry offers advanced functional analysis.
