Which of the following has no role in diagnosis Of childhood TB?
ELISA
Mantoux
CXR
FNAC
Antibody detection by ELISA or other methods is of no utility in diagnosis of childhood tuberculosis.Mantoux test is a useful diagnostic aid. An induration of more than 10 mm is suggestive of natural infection.Glands,liver and other tissues may be examined for histological evidence of TB by FNAC. Chest X-ray upright PA view is usually sufficient. Reference: Ghai essential pediatrics 6th edition.
Infectious disease