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A Further Application of the Nitroblue Tetrazolium Test

Br Med J 1974; 3 doi: (Published 03 August 1974) Cite this as: Br Med J 1974;3:317
  1. R. M. Rowan,
  2. A. M. Gordon,
  3. A. K. R. Chaudhuri,
  4. F. Moran


    The nitroblue tetrazolium (N.B.T.) test was performed on patients in whom a differential diagnosis of pulmonary thromboembolism or lobar pneumonia existed. The mean N.B.T. score in healthy subjects was 6·4% (range 1%-15%). Patients with uncomplicated pulmonary thromboembolism showed a mean N.B.T. value of 7·5% (range 3%-12%). In patients with lobar pneumonia the mean N.B.T. score was 42·4% (range 21%-85%). These results suggest that the N.B.T. test is of value in the differential diagnosis of pulmonary thromboembolism and lobar pneumonia.