A new HP
1C (high performance liquid chromatography) method with a cation-exchange column using non-porous polymer gel for the determination of glycated hemoglobin (HbA
1C) was developed. The HP
1Ccan clearly separate stable HbA
1C (s-A
1C) and labile HbA
1C (l-A
1C) after glucose loading
in vivo (OGTT) and
in vitro. This HP
1C method also shows acceptable precision and reproducibility within 5.0 % of CV. The reference interval, determined for 200 healthy individuals, was 5.22±0.44%. The correlation coefficient between s-A
1C and blood sugar, simultaneously determined, was 0.508 (n=75) and two dissociation cases had high l-A
1Cvalues indicating not fasting. Correlation of coefficients between s-A
1Cand 1 month or 2 months before determination were 0.509 and 0.467, respectively. Correlation of coefficients of the suspected glucose values from 3 different months (0, 1, 2 months before) had a more significant number of coefficient correlation, r=0.589. A significant correlation was detected between s-bA
1Cand fructosamine, r=0.849.
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