Urea (24 Hrs Urine)

Specimen Required

24 Hrs Urine

Fasting Required

Purpose of the Test

A urea test is ordered to evaluate kidney function, to monitor the effectiveness of dialysis or other treatments related to kidney disease, or to assess the protein breakdown in the body.

When this test is required

A healthcare provider may order this test as part of a routine check-up or when someone has symptoms of kidney disease or disorder. The test may also be ordered when someone is undergoing dialysis, has a kidney transplant, or has a condition that can affect kidney function.

What the Test Detects

This test measures the amount of urea nitrogen in a 24-hour urine sample. Urea is a waste product formed from the breakdown of proteins in the body. It is produced in the liver and excreted by the kidneys.

Preparation for the Test

There are no specific preparation requirements for this test. However, your healthcare provider may provide you with instructions for collecting the urine sample.

Sample Requirements

A 24-hour urine sample is required for this test. The sample should be collected in a clean container provided by the laboratory.

Additional Notes

In addition to a 24-hour urine sample, other tests may be ordered to evaluate kidney function, such as a blood urea nitrogen (BUN) test, creatinine test, or glomerular filtration rate (GFR) test. It is important to follow the instructions provided by your healthcare provider for collecting the urine sample.

Selected Tests