What tests are done to diagnose IC

Day 6
There are many tests that can be done to diagnose IC or rule out other conditions these tests are
Urinalysis to ensure that no infection is present in the urine of the patient suffering IC
Urine culture where the patients urine is sent out to a lab and put in a dish to grow for a few days usually these are also negative
Cystoscopy this is a test that is done either under general anesthesia or awake where a camera is placed through the urethra to view the inside of the bladder in some cases of Ic the bladders look normal however in some cases they have small bleeding patches in the bladder and others have larger areas of irritated inflamed tissue called hunners ulcers.
Bladder capacity test this is done to see how much urine the bladder can holdsome people with ic have reduced bladder capacity due to being unable to hold urine because of pain and discomfort this is called stiff bladder or hard bladder. 
Bladder and urethra biopsys are done to test the tissue of the bladder and urethra often times in ic these will show areas of tissue that are sloughed off or damaged as it did in mine despite the scope appearing normal.