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The clinical test for red urine is a test for the presence of blood in the urine. It is usually done by collecting a urine sample from the patient and then testing it for the presence of red blood cells. The sample can be collected in a clean container or directly from the patient's bladder using a catheter. The sample is then examined under a microscope to look for the presence of red blood cells. If the sample contains red blood cells, then the test is positive for the presence of blood in the urine.
All of the following must be considered when interpreting clinical findings and are too extensive to be covered on this site: