SGPT (Serum Glutamic Pyruvic Transaminase) (ALT)

 The alanine aminotransferase (ALT) test is a blood test that checks for liver damage. ALT used to be called serum glutamic-pyruvic transaminase (SGPT). So, it's sometimes called an SGPT test. Your doctor can use this test to see if a disease, drug, or injury has damaged your liver.