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What is Tuberculin test is - and explain in detail?
Ans. is 'b' i.e., Intradermal o In tuberculin test, injection is given intradermally on flexor (ventral) surface of left forearm, mid-wav between elbow & wrist.Intradermal injection of PPDon flexor aspect of forearm | Examined at 48-72 hours |||Induration > 10 mmInduration < 5 mmInduration 6-9 mm|||PositiveNegativeEquivocal | Repeat tuberculin test (two step testing)