Tests for bladder cancer look for different substances or cancer cells in the urine.

Urinalysis: One way to test for bladder cancer is to check for blood in the urine (called hematuria). This can be done during a urinalysis, which is a simple test to check for blood and other substances in a sample of urine. This test is sometimes done during a general health checkup.

Blood in the urine is usually caused by benign (non-cancerous) conditions such as infections, but it also can be the first sign of bladder cancer. Large amounts of blood in urine can be seen if the urine turns pink or red, but a urinalysis is needed to find small amounts.

Urinalysis can help find some bladder cancers early, but it has not been shown to be useful as a routine screening test.

Urine cytology: In this test, the doctor uses a microscope to look for cancer cells in urine. Urine cytology does find some cancers, but it is not reliable enough to make a good screening test.

Urine tests for tumor markers: Several newer tests look for substances in the urine that might indicate bladder cancer. These include:

• UroVysion™: This test looks for chromosome changes that are often seen in bladder cancer cells.
• BTA tests:These tests look for a substance called bladder tumor-associated antigen (BTA), also known as CFHrp, in the urine.
• Immunocyt™: This test looks at cells in the urine for the presence of substances such as mucin and carcinoembryonic antigen (CEA), which are often found on cancer cells
• NMP22 BladderChek®:This test looks for a protein called NMP22 in the urine, which is often found at higher levels in people who have bladder cancer.
• NMP22 BladderChek®:This test looks for a protein called NMP22 in the urine, which is often found at higher levels in people who have bladder cancer.

These tests might find some bladder cancers early, but they can miss some as well. In other cases, the test result might be abnormal even in some people who do not have cancer. At this time the tests are used mainly to look for bladder cancer in people who already have signs or symptoms of cancer, or in people who have had a bladder cancer removed to check for cancer recurrence. Further research is needed before these or other newer tests are proven useful as screening tests.

Watching for possible symptoms of bladder cancer

While no screening tests are recommended for people at average risk, bladder cancer can often be found early because it causes blood in the urine or other urinary symptoms. Many of these symptoms often have less serious causes, but it’s important to have them checked by a doctor right away so the cause can be found and treated, if needed. If the symptoms are from bladder cancer, finding it early offers the best chance for successful treatment.

Source: From The American Cancer Society