Negative montoux test is when induration is -: (A) <5mm, (B) <10mm, (C) <15 mm, (D) <20 mm
Answer is A. Ans. is 'a' i.e., < 5 mm MethodIntradermal injection of PPD on flexor aspect of forearm|Examined at 48-72 hours||||Induration > 10 mmInduration < 5 mmInduration 6-9 mm|||PositiveNegativeEquivocal|Repeat tuberculin test (two step testing)