Buddy as per my experience they are not checking anything for past surgeries they just asked verbally and what to reveal and what not just ask your family friend as they have your urine and blood to test so I am not sure how much they will reveal ... here test was like ... blood test , urine test , blood pressure test , xray , weight , hight and eyes test so just ask your family doctor about it .. they will suggest you better then us .... but i am sure for TB they will ask you to get some more tests done but the best pasrt is you can complete those tests on the same day ... If the X-Ray give then some indication of TB then will ask you to go for test in 3-4 months duration ... TB scares them more then anything not sure why