Hemoglobin AI levels in hyperthyroidism.

Abstract

Hemoglobin AI (HbAI) was studied in 21 cases of hyperthyroidism (H) and 33 control subjects (C). The correlation equations between fasting blood glucose (FBG, mg/dl, x) and HbAI (%, y) in the H and C groups were: y=0.07x+1.26 (r=0.5, p less than 0.05) and y=0.048x+2.23 (r=0.94, p less than p.001), respectively. Five cases in the H group showed a higher level of HbAI far outside the confidence of 5% level of significance calculated from correlation equation for the C group. The correlation equation for the sum of blood glucose (sigma BG, mg/dl, x) during GTT and HbAI (%, y) in the H group was y=0.003x+5.3 (r=0.64, p less than 0.01); in the C group y=0.005x+3.1 (r=0.88, p less than 0.001). sigma BG and HbAI showed a close correlation in both groups. According to the results of the GTT, the subjects, either C or H group, were divided into three sub-groups: normal (n), borderline (b) and diabetic (d). The correlation equation between triiodothyronine (T3, ng/dl, x) and HbAI (%, y) in the H group was calculated as y=0.003x+6.49 (r=0.58, p less than 0.05). T3 in the n subgroup was 331 +/- 90 ng/dl, in the b subgroup 362+/-166 ng/dl and in the d subgroup 621+/-227 ng/dl, and there was a statistical difference between the b and d groups.

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