This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'If you are in PHC, which anticoagulant is used to sent the blood sample for blood glucose estimation? \nSelect and explain. \nA. EDTA, B. Heparin, C. Potassium oxalate, D. Potassium oxalate + sodium fluoride', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sodium fluoride- potassium oxalate mixture is used for glucose determination.\nNaF inhibits the glycolytic enzymes responsible for the breakdown of glucose in the blood ( At room temperature, about 10% of the glucose is lost per hour from an untreated sample).\nThe potassium oxalate is the primary anticoagulant, as NaF has a poor anticoagulant effect.', 'role': 'assistant'}]