I often use a hair tissue mineral analysis (HTMA) test as a cheap way of getting an idea of my client’s main mineral levels in the body.
One pattern that I often see is a high calcium level, along with lowered magnesium (as well as potassium and boron). I personally also had this pattern.
Not everyone with this pattern has bladder issues, but I do believe that high calcium levels together with lowered magnesium might contribute to them.