Need Help In Diagnosing The Problem.

My husband is 39 years old. He had done a health checkup from columbia asia whitefiled last week where all the reports including cholesterol were normal.he had also been through the TMT test where the doctor found abnormality in heartbeat when he passed 7 mins on the TMT. We were asked to consult the doctor right there and he had asked to go for either of  2 tests which are CAG for risk stratification or CT coronary angiogram which was advised. Both the tests are expensive and we want a 2nd opinion to what can be done in this case. Is there any other test that can be performed to rule out whether he has any heart blockage? He has been asked to take tab ecosprin AV and tab amlodac. Shall he actually start having it? His bp is also high close to 160/90 if i recollect We dont know how to go about on this but dont want any painful tests either. Is there any other tests that we can do to rule this out? I have attached the necessary documents PLEASE Help