C-Reactive Protein is just one of many laboratory markers that may or may not influence inflammation that might trigger a stroke in relationship to blockage with either hard or soft plaque in the case of Atherosclerosis.
So, you have to have to blockage in the form of hard plaque (shows on a a Coronary Heart Score or CAC) and the related soft plaque which is not visible on that test, and some form of inflammation usually.
So other markers would be things like Homocystine, Oxided LDL’s like MPO, etc. But, having a low CRP does tell you that you don’t have much inflammation in general.
In my case, I have a CAC score of 66, then one 2 months later of 58, but I don’t have a single elevated form of known inflammation so my cardiologist isn’t worried about me at all…
I hope this helps.