i
Class I indication for performance of invasive coronary angiography:
- stable angina pectoris + high pretest likehood of CAD.

Class IIb indication for performance of invasive coronary angiography:
- stable angina pectoris + intermediate pretest likehood of CAD.

Class III indication for performance of invasive coronary angiography:
- stable angina pectoris + low pretest likehood of CAD.