This is Dr. David
A zero Coronary Calcium score is a strong predictor of low risk, with a 10-year event rate of only about 1%
there are some guidelines which have been published.
the review of data shows that you are safe to even wait 10 years before your next test
that is good you are exercising and controlling your sugar and cholesterol. and that you don't smoke.
keep up the healthy lifestyle.
let me know if you have questions.
Thanks for your answer