Sabin-Feldman dye test /sā″bin feld″mən/ [Albert B. Sabin, American virologist, 1906–1993; H.A. Feldman, American epidemiologist, b. 1914; AS, deag + L, testum, crucible] , a serological test for the diagnosis of toxoplasmosis that depends on the presence of specific antibodies that block the uptake of methylene blue dye by the cytoplasm of the Toxoplasma organisms.
