The IDEXX Brucellosis Serum X2 Ab Test is an enzyme immunoassay for the detection of antibodies against Brucella abortus in individual serum and plasma, and pools of up to 10 individual serum or plasma samples of ruminants. 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).