The IDEXX Brucellosis Milk X2 Ab Test is an enzyme immunoassay for the detection of antibodies against Brucella abortus in individual or pooled bovine milk of up to 250 cows. The test kit includes chemical reagents (wash, substrate, stop solutions) that can also be used with kits that test for other abortive diseases (Q fever, neosporosis, toxoplasmosis, Chlamydia).