Thrombocytopenia Diagnosis: Tests and Procedures
Thrombocytopenia (low platelets) diagnosed via:
- CBC: Platelets <150,000/µL indicates thrombocytopenia.
- Blood smear: Microscopic exam of platelet size, shape, morphology.
- Platelet function tests: Aggregation studies, bleeding time, clot retraction.
- Bone marrow aspiration/biopsy: Examines platelet production site for disorders/infections.
- Additional tests: Coagulation (PT/aPTT), infection cultures, autoimmune (ANA, DAT), genetic (chromosome/gene analysis).
Combined with history and physical, these identify cause and guide management.
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