This recent study finds no differences in GPCR autoantibody concentrations between patients with POTS and healthy controls when using CellTrend tests (ELISA).
https://ahajournals.org/doi/abs/10.1161/CIRCULATIONAHA.122.059971
This seems to suggest that CellTrend tests may not be useful to establish the role of autoimmunity in POTS.
https://ahajournals.org/doi/abs/10.1161/CIRCULATIONAHA.122.059971
This seems to suggest that CellTrend tests may not be useful to establish the role of autoimmunity in POTS.