A 14 year old girl is small in stature and appears younger than her age. She has not started menstruating, and her parents are concerned that she is not growing taller nor entering puberty. She has frequent headaches, and is having difficulty seeing the board at school, even though she sits near the front of the room. She feels cold, even when the room is warm, and she is often constipated. Her parents are concerned. She is in the 30th percentile for height and weight, significantly below her peers.
Required:
What hormones are of LEAST concern in this person?
a. insulin
b. GH
c. GnRH
d. TSH