Blood samples.
:check:Tests performed on blood should include hemoglobin, protein, calcium, phosphorus, vitamin A, and serological examination. This results of these test detect nutritional deficiencies or previous disease conditions in the herd.
:check:The routine serological examinations include infectious bovine rhinotracheitis, bovine virus diarrhea, and shipping fever.
:check:Blood test for leptospirosis and brucellosis also may be indicated.