Kitty I'm not a medical expert but in laymen's term - it is my belief that Spike Proteins are the mechanism that allows the covid vaccinations to respond to the covid virus without introducing any live covid virus to the body. Google "Covid, Spike Proteins" Apparently, the vaccines introduce spike proteins to the body and they automatically attach to the covid cells. Our immune system sees these spike proteins and attack the covid cell they are attached to - thus preventing severe covid.

My belief is, this novel approach to defeating viruses has save a lot of lives but at the same time it's left our immune system compromised resulting in long covid. It is my belief that it is not only attacking the covid cells but everything else in our body that covid might have interacted with.
If you review the articles on spike proteins you will see they have found them in every system affected by long covid. GI track, Pulmonary, nervous, heart, lungs, intestines, brain.
I believe the fact that they are finding these spike proteins in our bodies long after the preliminary case of covid - implies that once covid is over (5 days ha ha) our immune system is still attacking our bodies seeking out these spike proteins and killing whatever they have been and or the cells they are attached to.
As far as the test for the Spike Proteins - you only have to understand the number of hits on Google to realize they have been tracking this potential for years and I'm certain the government and all the pharmaceutical companies have a blood test for it but you and I won't get it.
Can you imagine the liability exposure they would have if it's proven that the vaccinations are the cause of long covid
Not a bright scenario for us long haulers. A lot of people don't want to know what causes long covid.