<unk>  can result from autoimmune disease, hypopituitarism, growth hormone deficiency, hypothyroidism, excessive dopamine action in the tuberoinfundibular pathway and/or the anterior pituitary, and ingestion of drugs that activate the D2 receptor, such as direct D2 receptor agonists like bromocriptine and pergolide, and indirect D2 receptor activators like amphetamines (through the induction of dopamine release).
Hypoprolactinemia
Hyperprolinemia
Hypophosphatasia
Hypervalinemia
Hyperthyroxinemia
Hypophosphatemia
Hypertryptophanemia
Hyperlysinemia