Who is a calcium score test for?

It's most useful if you're roughly 40 to 70, with no heart symptoms or known heart disease, but with risk factors. These include high cholesterol, high blood pressure, smoking and early heart disease in the family. It comes into its own when your risk sits in the middle, neither clearly low nor clearly high. That's where the result can tip a decision, like whether to start a cholesterol-lowering medicine.

European and US prevention guidelines both name it as an option for exactly this situation. So it's mainly a test for this middle group, and for them a really valuable one.