![]() Injury to a nerve root is another rare possibility. The risk of infection, bleeding, or bruising is about the same as a blood draw. See the next section for a description of this. Most people feel some discomfort during the LP and many have some aching-type low back pain for several days following the procedure. We also prefer not to do a LP in the first few weeks after a new low back tattoo. ![]() Let your physician know before the scheduled procedure date if you have any of these issues, so that a determination can be made. Recent low back surgery, congenital malformations of the spine, and infection or inflammation of the skin of the low back may interfere with the safe performance of a LP. ![]() What conditions may interfere with getting a LP? On occasion, we are not able to obtain an adequate amount of spinal fluid for all studies necessary and the test may need to be repeated. Studies of spinal fluid may include a test for cells, proteins, infections or other abnormalities. Spinal fluid analysis may also help evaluate for infections, degeneration, or other disorders. These tests require comparison with blood drawn on the same day as the test. In evaluation for MS and related disorders, spinal fluid analysis may be useful to document the presence or absence of inflammation using tests known as oligoclonal bands and IgG index. Fluid is withdrawn from this area to avoid the needle directly hitting the spinal cord.Ī LP provides information that may assist your physician with obtaining a correct diagnosis for your condition. This fluid is removed by using a carefully inserted needle into the lower back where the spinal cord ends. It is a type of diagnostic test during which a medical professional collects a sample of the fluid that surrounds the brain and spinal cord. When should I expect to hear results of my LP?.What symptoms should prompt the patient to call our office back immediately?.Are there any restrictions after the test?.I am very nervous can you give me an injection to relax me for the test?.Should somebody come with me for this test?.What conditions may interfere with getting a LP?.
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