Are there any risks to the test?There is very little risk to having a CEA blood test. You may have slight pain or bruising at the spot where the needle was put in, but most symptoms go away quickly.CEA tests of body fluids are usually very safe. Serious problems are rare. But you may experience one or more of the following side effects:If you had a CSF test, you may feel some pain or tenderness in your back at the site where the needle was inserted. Some people get a headache after the test. This is called a post-lumbar headache.If you had a peritoneal fluid test, you may feel a little dizzy or lightheaded after the procedure. There is a small risk of damage to the bowel or bladder, which may cause an infection.If you had a pleural fluid test, there is a small risk of lung damage, infection, or blood loss.
