[Plasma LH response to LHRH in hypothyroid and thyroxin-treated rats (author's transl)]

Plasma LH response after intravenous injection of synthetic LHRH (50 ng) was studied in male rats (normal, after thyroidectomy, after treatment by dl thyroxin 50 microgram/a day, 10 days). LH response was significantly elevated in hypothyroid animals although it was not influenced by thyroxin injections. Prolonged plasma LH half-life in hypothyroid rats can account in this result.