This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Platelet, Subject name: Pathology
[{'content': 'You are working in a PHC and have to send a sample for blood glucose estimation. Which of the following anticoagulant will you use for sending your sample? \nSelect and explain. \nA. EDTA, B. Heparin, C. Potassium oxalate + sodium fluoride, D. Tri Sodium citrate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Blood samples for measurement of glucose are taken in Gray l containing Potassium oxalate + sodium fluoride. Enolase enzyme in the glycolysis is inhibited by fluoride so sample is collected in tubes containing fluoride to inhibit glycolysis.', 'role': 'assistant'}]