hCG Definition:

hCG is an abbreviation for a hormone that is naturally produced by a part of the fertilized ovum directly after conception. The letters ‘hCG’ stand for Human Chorionic Gonadotropin. The pituitary gland produces a very similar hormone known as luteinizing hormone and some experts argue that hCG is produced in the pituitary gland of both men and women. The injections are used in various applications from weight loss to fertility treatments.