<prompt> If you are in PHC, which anticoagulant is used to sent the blood sample for blood glucose estimation?EDTAHeparinPotassium oxalatePotassium oxalate sodium fluoride  <response>: Sodium fluoride- potassium oxalate mixture is used for glucose determination.NaF 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.The potassium oxalate is the primary anticoagulant, as NaF has a poor anticoagulant effect. 