So when I was on lithium I started having symptoms of diabetes insipidis (frequent urination, excessive thirst, large volumes of diluted urine) but those went away once I was completely off the lithium.

I saw a nephrologist just in case and he proclaimed everything to be fine, and asked if I wanted more tests. I said no, because my GP had ordered tests and I had them done the day of the nephrology appointment so they weren't ready yet.

My GP called me into her office as soon as the tests were back, because they indicated there's still a kidney problem. There were too many white blood cells, protein, and calcium in my urine, the creatinine and microalbumin are too high, and there's a note that says "granular casts present".

I don't know what it all means, but I looked up what "granular casts present" means and it indicates either strenuous exercise or chronic kidney disease. And I wasn't exercising before the urine test, I had been sitting in a chair for at least 30 minutes, and sitting on a bus before that.

I'm in the middle of doing a 24 hour urine test, my 3rd one since all this began. The first two were large quantities of diluted urine, and this time it's definitely not. My pee looks normal. But the tests are abnormal.

I see the nephrologist again in a week and a half, but for blood pressure. My GP gave me a printout of the tests to bring to him since it still looks like a kidney problem. Are kidney and blood pressure related?