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: Biochemistry
You are working at a PHC and you want to send a blood sample for glucose estimation. Which of the following anticoagulant will he have to use for accurate results? 
Select and explain. 
A. EDTA, B. Potassium oxalate and NaF, C. Calcium Oxalate and Sodium Citrate, D. Trisodium citrate
B: Potassium oxalate and NaF
Answer: B: Potassium oxalate and NaF 
Explanation: Potassium oxalate is anticoagulant and NaF (Sodium Fluoride) is antiglycolytic. They are used for blood collection for blood glucose estimation to obtain accurate results. Sodium Fluoride acts by inhibiting Glycolysis by inhibiting the enzyme enolase. If fluoride is not added cells will utilise glucose glycolysis during transpo and a false value will be obtained. Ref: Textbook of Biochemistry for Medical Students by D.M. Vasudevan, 6th Edition, Page: 276