@redaxe Am bumping this question as I am also curious if anyone on PR has had vascular studies done (re: endothelial dysfunction or other vascular issues) and if so, what were the studies and what did they find?
Well I guess the most common vascular study done is a blood pressure test. obviously

but that only gives you so much information
Honestly I'd never heard of a vascular ultrasound until I got into reading a bit about this by chance and wondered if anyone knows anything more about it.
Certainly many ME/CFS symptoms give the impression that they could be worsened by poor vascular function. I'm sure we all know what poor blood flow to the brain or muscles or skin or gut would feel like.
Possibly explain
-IBS symptoms
-loss of appetite
-brain fog, memory loss, cognitive loss
-muscle weakness, poor stamina, poor post exercise recovery, reduced VO2max.....
-cold intolerance and heat intolerance
I wonder if this is something that Ron Davis Open Medicine Foundation will test for. Aren't they looking to test their severe ME/CFS patients with every biological test under the sun?