Abstract
Investigation of serum growth hormone response to arginine infusion was undertaken in 24 hyperthyroid and in 18 primary hypothyroid patients.
Growth hormone response to oral glucose or TRH was undertaken in primary hypo-thyroidism.
In untreated hyperthyroidism, basal GH levels was within normal limits and subnormal GH response to arginine infusion were observed.
In untreated hypothyroidism, basal GH levels was within normal limits and low response to arginine infusion were observed. A paradoxical GH rise to oral glucose adminis-tration or TRH was not noted.
After treatment of thyroid dysfunction, GH response increased. There was no signifi-cant correlation between ΔGH and RT3u, T4
