I think blockages cannot be reversed. They say that lipid lowering drugs such as Lipitor may have some effect on plaque, but I am not sure. I have a blockage of 35% in my LAD. I am on some meds and life style changes.
Here in Australia most tests are subsidised by our government and we only pay very little. Our doctors love tests.
Well I don’t know, how much it can reverse (Others might answer you more correctly) but all I can say: you MUST stick with heart healthy lifestyle, also do not smoke, but sure you know that, because simply you have no other way, also don’t forget the most important is that how you feel? Not some test, that you cannot afford. So I would not worry at all not having an expensive test. Also you should google, I’ve seen how huge different the price can be in different hospitals.
Here in Canada all free for us and I always wish to you Americans the same when I read posts like yours. But you know the thing is that our doctors do not suggest so many tests as you have been advised., because it won’t go from our own pocket but from the tax payers dollars . But I hope and wish you to get that test eventually somehow it look very neat and interesting.
Take care!