Quulabs’ Qnow results on Qnow Reader. Qoolabs’ QNow CMV Antibody Rapid Test is an immunochromatographic assay that uses antigens to detect CMV antibodies present in a sample. A mixture of antigens representing immunodominant epitopes of CMV and control antibody are immobilized on membrane support as 2 distinct lines. Another mixture of antigens is labeled with europium fluorescent beads to allow visualization of the formation of immunocomplex composed of the CMV antibodies and the antigens. A, Presence of a band at the control region (C) without a band at the test region (T) shows a negative result. B, A band at both the C and T regions indicating a positive result. Abbreviation: CMV, cytomegalovirus.