Its a bit complicated Gaj, because the GP who gave me these bloods is not the GP who prescribed my meds. So I don't really want to make him do the clarification. Like I say he's a bit clueless, which is why I decided to go elsewhere in the first place. Trying to make him sort things out would be a chore for all concerned. I could go see the prescribing GP, except she didn't want to test at all, which turns out to have been a bad idea, because if I hadn't tested I probably would have ended up seriously low in sodium.
Luckily I have a specialist appointment on the 28th so I'll try and get some sense from him. Not sure there's much point in chasing this lot up. It's good enough really, for week 4 bloods.