Sodium fluoride is a glycolysis inhibitor, hence sodium fluoride-blood, better sodium fluoride-plasma, is suitable for glucose-, lactate-, pyruvate- and homocysteine evaluation. If possible, shortly after obtaining the blood sample centrifuge for 10 min at 2000 x g (approximately 3000 rpm) and transfer the supernatant fluid into appropriate tube with screw top and mark as “sodium fluoride-plasma”.
