Follicular Stimulating Hormone (FSH) a reproductive hormone that is produced by the pituitary gland in the brain. FSH stimulates the growth and development of unfertilised eggs during the menstrual cycle in women and initiates the production of sex hormones such as oestradiol and progesterone. FSH is also used to stimulate the production of sperm in men. The FSH hormone is often tested with other sex hormones such as LH, testosterone, oestradiol and progesterone for diagnose infertility and pituitary gland disorders in men and women.

Luteinizing Hormone (LH) is a reproductive hormone that is produced by the pituitary gland in the brain. This hormone is used to regulate the menstrual cycle and ovulation by stimulating the ovaries to produce other reproductive hormones in females whereas in men, LH stimulates and controls testosterone. The LH test is used to determine any reproductive problems.

Testosterone is a steroid hormone produced by the male testes and the adrenal glands in both men and women. This hormone production is stimulated and controlled by the luteinizing hormone. Testosterone is seen in large amounts in boys during puberty, causing growth of body hair and muscle development. It also regulates the male sex drive and maintain muscle mass. It is found in small amount in females from the ovary. Testosterone test is used to diagnosed various conditions such as erectile dysfunction and infertility in men.

Sex Hormone Binding Globulin (SHBG) is a protein produced by the liver. Its main function is to bind and transport the hormones oestradiol, testosterone and dihydrotestosterone in the blood. The SHBG test is used to diagnose testosterone deficiency in men and is used to investigate the production of testosterone in women.

DHEA-Sulphate is a male sex hormone found in both male and female. It is mostly produced in the adrenal glands however a small amount is produced in the male testes and the female ovaries. DHEA-Sulphate is used to control body function such as heart rate and blood pressure as well as being important in the production of sex hormones, testosterone and oestrogen. DHEA-Sulphate is measured for the diagnosis of tumours of the adrenal grands or diagnosis of disorders of the testicles or ovaries.