A rapid sedimentation rate is a sign of disease, but the test does not identify what is causing the cells to fall more quickly than normal. Keeping track of the sedimentation rate in successive tests can help a physician follow the progress of diseases that cause inflammation, including rheumatic fever and rheumatoid arthritis. This can provide the doctor with important information. To collect material for the culture, the doctor uses a cotton-tipped swab to remove cells and discharge from the throat. The specimen is watched carefully, and the bacteria are identified.
Urine tests can reveal infections in the kidneys, the bladder, andthe rest of the urinary tract.
The chemical and cell content of urine can also show how well the digestive system is working. Urine can be tested in four different ways. First, it can be examined visually for color and texture. Second, the water content of the urine can be measured. This shows how well the kidneys are doing their job of filtering the body's wastes.