Is FSH the same as testosterone?

No, FSH (follicle-stimulating hormone) and testosterone are not the same.

FSH is a hormone produced by the pituitary gland. In men, FSH stimulates the production of sperm in the testes. In women, FSH stimulates the growth and development of follicles in the ovaries.

Testosterone is a hormone produced by the testicles in males and in small amounts by the ovaries in females. In men, testosterone is responsible for the development of male characteristics such as a deep voice, facial hair, and muscle mass. In women, testosterone plays a role in regulating the menstrual cycle and libido.