Section 305(b) requires each state to prepare a water quality assessment report every two years. The Environmental Protection Agency (EPA) compiles the information from the state reports and prepares a summary for Congress on the status of the nationâs waters.
Carcinoembryonic antigen (CEA) is a cancer marker. ( 1 See above under cancer markers.) 2  DR-70 is a simple blood test - (See above). 3  Hemoccult Test for colorectal cancer tests for blood in the stool. A positive finding warrants having further tests, like a colonoscopy or sigmoidoscopy to detect polyps and tumors. This test can be performed by almost any doctor's office.
How to Diagnose Brain Tumors. At Johns Hopkins, the brain tumor team will perform a variety of examinations to diagnosis a brain tumor. Magnetic resonance imaging (MRI) and computed tomography (CT or CAT scan) are the most common types of tests used to diagnose brain tumors. Both MRI and CT scans use computers to create detailed images of the brain.