The influence of second blood drawing on the health examination results of blood glucose

Objective To investigate the influence of second blood drawing on the examination results of blood glucose.Methods We used automatic biochemical analyzer to test fasting blood glucose value of health examination among three groups.Group A was the normal control one,and group B,C were the test groups,fasting venous blood were collected in group A,B,and that in group C was collected after 30 minutes.Results There was no difference of the first time blood glucose level between the test group and the control one(P0.05),but there was a significant difference of blood glucose level from the second blood drawing between the test group and the control one(P0.01).Conclusion The glucose level of second blood drawing does not accurately reflect fasting blood glucose level,but it should be avoided.