Which of the following hormones is not produced by the kidneys?

Explanation

The kidneys are responsible for secreting renin, erythropoietin, and the active form of vitamin D (1,25-dihydroxycholecalciferol). However, vasopressin, also known as antidiuretic hormone, is produced by the hypothalamus and released by the posterior pituitary gland, not the kidneys.