All of the following use c-AMP as a second messenger except
Testosterone - the principal male sex hormone (androgen) is a steroid hormone that is produced by Leydig&;s cells of the testes in response to luteinizing hormone secreted by the pituitary gland. It is also produced by the adrenal coex in both males and females.Ref: Ganong&;s review of medical physiology; 24th edition: page no: 423
Coicotropin
Dopamine
Testosterone
Vasopressin
Endocrinology