system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do doctors focus on LDL cholesterol scores when Coronary Artery Calcium scores are exponentially better at predicting heart disease/heart attacks?

Is there something I'm missing outside of cost?
gpt
Because apparently a coronary artery calcium score is an application of a CT scan, which is expensive, exposes your body to radiation, puts you on a waiting list, etc... and you can just get an LDL cholesterol by a simple blood test.