This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Coagulation, Subject name: Pathology
[{'content': 'Anticoagulant used in coagulation study is? \nSelect and explain. \nA. Calcium citrate, B. EDTA, C. Sodium bromide, D. Trisodium citrate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Trisodium citrate is the preferred anticoagulant for platelet and coagulation studies. EDTA: Primary use is for the CBC and individual components of the CBC. Pseudothrombocytopenia is seen when the blood sample is collected inEDTA l In vitro aifact resulting from platelet agglutination antibodies (IgG, IgM,IgA) when the calcium content is decreased by blood collection in EDTA', 'role': 'assistant'}]