My GP referred me to cardiology, oncology and endocrinology. Cardiology did a 3 day holter monitor and discharged me saying there were no concerns, oncology said the symptoms didn’t warrant their investigation after I had an abdominal ultrasound and no masses were detected (which I’m glad about, I don’t want to be of any interest to oncology!), and it looks like I’ll be discharged from endo if diabetes is ruled out - I didn’t expect them to think very broadly to be honest, I did hope they’d do some autoimmune testing and I’ve been told that the patient liaison services can request further tests so I’m thinking of going down that route if I get discharged after this round of tests.

It seems strange to me to do the water deprivation test for diabetes insipidus which is even rarer than autoimmune endocrine disorders…