<prompt> Mrs Reeta Wardhan, a 50 year old female with rheumatoid ahritis is being considered for infliximab therapy. Which of the following test should be performed before beginning treatmentLiver function testPPD skin testPulmonary function testVisual examination  <response>: Ref-Katzung 11e p633 Infliximab is a monoclonal antibody against TNF-0. It is commonly used to treat moderate to severe rheumatoid ahritis paicularly in patients .adverse effects, including reactivation of latent tuberculosis. All patients being considered for TNF-a inhibitor therapy should have a baseline PPD skin test to screen for latent tuberculosis.. 