<s>[INST] Hi My father had TMT test done, exercise time was 3:25 min, Max HR attained was 155 bpm (95% of target 164) and maximum BP 200/100. Max workload attained :5 . All other tests done like ECG, Echo, Sugar, cholestrol, HB% are normal. What is your suggestion as the consulting doc is asking to do another test of angeogram. [/INST] Hi, Thanks for writing to Chat Doctor, I am Chat Doctor. ETT is done to rule out underlying ischemia, but it is only 77% specific n can give wrong result or either not show any thing even patient may have Hidden HD that may come as in form of heart attack later at any stage ... this report showed that your father had not good exercise capacity mean heart is not functioning good n as he might have other risk factor for coronary artery disease n along with this report he needs to undergo to angiography to make sure is isn't having serious underlying pathology . But if your father iOS hesitating to undergo intervention they. CT Anglo can be down to look for any CAD(stenosis) with doing intervention ... I suggest your father should go for further investigation as advice by your cardiologist, but u can choose the procedure that whether to do CT /coronary angiogram n then will TX accordingly after report ... I hope this answered your question, if you have more feel free to ask. Regards. </s>