Paul Mason, Eric Westman, Anthony Chaffee, Rob Cywes and Tim Nokes all have many lectures on the cholesterol con (as well as Ken Berry). Lot of good talks by those guys and others on the low carb down under YouTube channel.
If your triglycerides are low you’re likely good. Listen to some of those lectures and you won’t need to worry anymore. Also look into fasting insulin, a1c and if you can find it there is a test that shows damage level to LDL (particulate test I think it’s called) which if it is damaged is indicative of a problem.
It should be much easier / cheaper to get the tests I mentioned than a CAC test.