Urine microscopy, urine test
Urinalysis is used Urinalysis is used to detect and manage a wide range of problems such as urinary tract infections, kidney disorders and diabetes. Abnormal urinalysis may point towards a particular disease or illness and prompt further testing.
On admission to a hospital; preparation for surgery; as part of a routine medical examination; or when evaluating a new pregnancy. It may be done if you have stomach or back pain, frequent or painful urination, or blood in the urine. Urinalysis may be required on a regular basis for monitoring of certain medical conditions such as kidney disease.
Sample of urine (20-50 mls) in a sterile container
Urinalysis involves checking the appearance, concentration and content of urine.
This can be done by
Can be evaluated by a dipstick test in the doctor’s surgery or in the laboratory. A dipstick is a thin plastic strip with bands of chemicals on it which change colour if certain substances are present or present in high concentrations. It often tests for the following:
Several drops of urine are viewed with a microscope or with an automated processor. The presence of the following are checked for:
Urine for urinalysis can be collected at any time. The first morning sample is the most valuable because it is more concentrated and more likely to yield abnormal results.
It is important to obtain a mid-stream (clean catch) specimen if suspecting a UTI. This is to reduce the chance of specimen contamination with skin organisms and cells. See article on Urine Culture.
Urinalysis is used as a screening and/or diagnostic test that can detect urinary tract infections as well as a a number of different metabolic and kidney disorders. In some conditions, it also provides a rapid way to monitor ongoing progress. However, a urinalysis cannot detect all disorders.
A routine urinalysis may be done when you visit your doctor, attend an outpatient clinic or when you are admitted to hospital. It can also be part of a routine medical examination, a new pregnancy evaluation or preparation for a surgical procedure. It will most likely be performed if you see your doctor complaining of stomach pain, back pain, painful or frequent urination, or blood in the urine. This test can also be useful in monitoring certain conditions.
Urinalysis results can have many interpretations. A urinalysis alone usually doesn’t provide a definite diagnosis and often prompts additional testing to be requested when abnormal results are found. Urinalysis is only one screening test that can provide a general overview of someone's health. Your doctor must correlate the urinalysis results with your symptoms and overall health.
Conditions: pregnancy, kidney disease, proteinuria
Last Review Date: September 30, 2020