How much does it cost to get cat blood work done? By: Pet Vet El Segundo, CA Replied on 04/20/2011 It depends on the what type of blood work and how many tests are included. Some have an in-house blood screen that they can do under $75 that should show the liver/kidney values. Basic blood tests that are testing for the normal body functions like complete blood count (CBC) or a chemistry screen can be anywhere from $60-150. If you decide to run additional tests, such as Feline Immunodeficiency Virus/Feline Leukemia Virus (common screening for sick or at-risk cats), that will cost extra.