Thrombocytopenia < 80 × 10 9 /l Exclusion laboratory artifact Special clinical situation Differential blood count pathological Normal Course acute Chronic Morphology conspicuous Normal Determination in citrated blood, blood smearCytostatics, splenomegaly, sepsis, DIC, hepatic cirrhosis, NAITTTPLeukemia, myelodysplasiaHeparin induced Change in therapy, antibody proofPost Infectious case history, clinicDrug case history, antibody proofAlter transfusion antibody proofHereditary forms Look at familyMyelodysplastic syndromeAITP Antibody proof, Exclusion of collagenosis, HIV, HCV

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