investigations
Last reviewed 01/2018
The diagnosis is confirmed by catheterisation.
Additional investigations should be performed to ascertain the cause:
- urinalysis - blood, infection
- blood - white cell count, haemoglobin, urea and electrolytes
- abdominal radiology might be performed to look for bladder calculi
A rectal examination should also be done to assess the size of the prostate and to exclude constipation.