Nitroblue tetrazolium test


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Nitroblue tetrazolium test
Nitroblue tetrazolium test
Alternative Names

NBT test


Normal Values

Normally, the sample and the neutrophils within it turn blue when NBT is added. This indicates that the neutrophils are producing the chemical necessary to kill bacteria.


What abnormal results mean

If the sample does not change color when NBT is added, the neutrophils are missing the chemical necessary to kill bacteria. This may indicate CGD.



Review Date: 04/29/2005
Reviewed By: Frank A. Greco, M.D., Ph.D., Director, Biophysical Laborartory, The Lahey Clinic, Burlington, MA. Review provided by VeriMed Healthcare Network.


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