Majewska H, Konecka A M, Witowski A
Exp Clin Endocrinol. 1983 Nov;82(3):320-4. doi: 10.1055/s-0029-1210292.
Studies on the influence of long-lasting hyperthyroidism on enzyme activities and total protein level in the blood plasma of adult Leghorn hens showed that: 1. Protein level during whole experimental period showed inconsiderable variability irrespective of T4 dose. 2. Activity of aspartate aminotransferase (GOT) and alanine aminotransferase (GPT) increased. Changes were dependent on T4 dosage level. 3. T4 had no effect on activity of aldolase.