Vitrex Vacusence Glucose Tubes Written by Bernie Webb on 24 May 2021. Posted in Vitrex. Vitrex Vacusence Glucose Tubes contain Sodium Fluoride and K3EDTA, and also Sodium Fluoride and Potassium Oxalate. Glucose tubes are used for glucose determinations like blood sugar and sugar tolerance. vitrex, Tubes Prev Next