Table 4. Suggested first-line diagnostic investigation for chest pain [4].

Pre-test probability	Suggested first-line investigation
<10%	Consider other causes of chest pain
Between 10% and 29%	Consider coronary calcium
	If coronary calcium score is zero consider other causes of chest pain
	If coronary calcium score is between 1 and 400 consider functional imaging for further assessment
	If coronary calcium score is >400 consider coronary angiography
Between 30% and 60%	Consider functional imaging
Between 61% and 90%	Consider coronary angiography if revascularisations is a consideration or functional imaging if revascularisation is not a consideration
More than 90%	Manage as angina