<prompt> Tuberculin test is -SubcutaneousIntradermalIntramuscularSubdermal  <response>: 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 mmPositiveNegativeEquivocal Repeat tuberculin test two step testing 