Correlation among fasting plasma glucose, two-hour plasma glucose levels in OGTT and HbA1c

Abstract A study was made on the association among 2-h plasma glucose (PG) in oral glucose tolerance test (OGTT), fasting plasma glucose (FPG) using correlation and regression equation. Subjects were 13 174 OGTT examinees tested between 1980 and 1998. Blood glucose was determined by the glucose oxidase method and glycated hemoglobin (HbA1c) by the HPLC method. As for correlation between 2-h PG and FPG, regression equation of the y =57.1+0.336 x ( r =0.866, P y =61.5+0.286 x ( r =0.814, P