Urinalysis is a series of tests on your pee. Doctors use it to check for signs of common conditions or diseases. Other names for it are urine test. The tests detect and/or measure several substances in the urine, such as byproducts of normal and abnormal metabolism, cells, cellular fragments, and bacteria. Some examples include glucose, protein, bilirubin, red blood cells, white blood cells, crystals, and bacteria. Have you ever wondered why health professionals ask for a urine sample? The kidneys remove waste material, fluids, and other substances from the blood.
Storing a urine sample until you hand it in What urine samples are used for Further information. To collect a clean urine sample: What's a mid-stream urine sample? This reduces the risk of the sample being contaminated with bacteria from: What urine samples are used for Your GP or another healthcare professional may ask for a urine sample to help them diagnose or rule out certain health conditions.
Urine tests are most commonly carried out to check: Further information How should I collect and store a stool faeces sample? How soon can I do a pregnancy test? Lab Tests Online UK: If these bacteria contaminate the urine, the doctors might not be able to use the sample to tell if there is a true infection or not. To avoid this, the skin surrounding the urinary opening has to be cleaned and rinsed immediately before the urine is collected.
In this "clean-catch" method, the patient or parent cleans the skin, the child then urinates, stops momentarily if the child is old enough to cooperate , then urinates again into the collection container. Catching the urine in "midstream" is the goal. In some cases for instance, if a child is not toilet trained , the doctor or nurse will insert a catheter a narrow, soft tube through the urinary tract opening into the bladder to get the urine sample. For specific medical advice, diagnoses, and treatment, consult your doctor.
More on this topic for: Start to urinate into the toilet. Do not collect the initial urine stream. In midstream, begin to collect urine into the sample container. Make sure that you collect at least 1 to 2 ounces. Finish urinating in the toilet. Getting a clean sample from a child may be difficult. Parents or the child can clean the skin surrounding the urinary opening.
A typical urinalysis involves a visual exam, a dipstick test, and a microscopic exam. Visual Exam For the visual exam, the urine will be examined for its color and clarity. Dark urine, abnormal colors , blood in urine , cloudy urine, or foamy urine can indicate kidney problems, dehydration, or other medical problems. Normal urine should range in color from clear to dark yellow. Chemicals on the stick react with urine and change color to measure the following: The level of acidity can be affected by diet, chemical imbalances, and certain metabolic disorders.
Concentration is a measure of the concentration of various molecules in urine. Highly concentrated urine can be a sign of dehydration. Nitrites in urine can indicate a bacterial infection such as a urinary tract infection. Proteins in urine can indicate kidney disease or kidney damage. They may also be present in urine after strenuous exercise and when dehydrated.
Everything you need to know about urine tests
Overview covers definition, preparation and results of this common lab test to check urine for signs of disease and for clues about overall. Urine tests are used for a range of diagnoses from infections to diabetes to some cancers. Find out how urine tests are performed in the. Most people will have already given a urine sample at some point in their lives. A sample can be analyzed using a number of different tests.