Thyrotropin Home>Pharmacy>Drugs_and_Medications>T>Thyrotropin     Web Pages Thyrogen - (thyrotropin alfa) - Genzyme Official pharmaceutical website (thyrotropin alfa for injection) is used in combination with other tests to detect recurring or leftover thyroid cancer cells in patients with a history of certain types of thyroid cancer. Thyrogen Full prescribing information from RxList.