Sabin-Feldman dye test is used for diagnosis of: March 2005, 2009 and September 2007: (A) Cryptosporidium, (B) Babesia, (C) Pneumocystis, (D) Toxoplasma
Answer is D. Ans. D: Toxoplasma The most common method of laboratory diagnosis of toxoplasma gondii is by serology like Sabin-Feldman dye test, indirect immunofluorescence, indirect haemagglutination, complement fixation and ELISA. Sabin-Feldman dye test is based on the specific inhibition by antibody of the staining of the trophozoite by alkaline methylene blue.