The FeLV/FIV screening test is a veterinary test used to detect the presence of feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV). These diseases are caused by viruses that affect a cats immune system and can be serious and even fatal. The test is used to identify infected cats, allowing for early diagnosis and appropriate treatment. It is an important tool for the health and care of cats, especially those living in feline communities or who have contact with other cats