<prompt> Defect in the following is identified by nitroblue tetrazolium test?PhagocytosisComplementT cellB cell  <response>: Deficiencies of oxidative metabolism e.g., phagocytosis are detected with either the nitroblue tetrazolium NBT dye test or the dihydrorhodamine DHR oxidation test. These tests are based on the ability of products of oxidative metabolism to alter the oxidation states of repoer molecules so that they can be detected microscopically NBT or by flow cytometry DHR. Qualitative studies of superoxide and hydrogen peroxide production may fuher define neutrophil oxidative function. Ref: Gallin J.I. 2012. Chapter 60. Disorders of Granulocytes and Monocytes. In D.L. Longo, A.S. Fauci, D.L. Kasper, S.L. Hauser, J.L. Jameson, J. Loscalzo Eds, Harrisons Principles of Internal Medicine, 18e. 