Glucose Tube is used in blood collection for the test such as blood sugar, sugar tolerance, erythrocyte electrophoresis, anti-alkali hemoglobin and lactate. Owing to the addition of inhibitory type anticoagulant, the glucose tube effectively prevents metabolism of blood sugar an successfully solves the unavoidable hemolysis. Thus, the original status of blood will last for long time and guarantee stable testing data of blood sugar within 72 hours.