rowan47, that is a crazy LAD score. CAC can't tell you how occluded the artery is though. Tech and tests are fallible sometime a mistake in transcription can scare the daylight.
I deflated high triglycerides with folate (methyl folate Jarrow brand).
The usually start the statins low and build. The prevastatin dose range is 10 to 80. 40mg to 80mg is the therapeutic range. Rouvastatin is a stronger medication.
Normal range is less than 100.
Low thyroid reduces ldl receptors in your liver preventing the liver from clearing them.
There are some newer medication for ldl enlicitide that I've been looking at. I'd be letting the cardiologist figure it but I'd be trying to get in sooner on a cancellation.
Have you had a treadmill stress test. You won't even get an internal angiogram unless your heart shows signs of struggle.
You shouldn't stress (it's easy to say). You are getting timely treatment.