OVERVIEW:
Urea is the final breakdown product of the amino acids. Nitrogen in the form of ammonia is produced in
the liver after protein is broken down. The nitrogen combines with the other chemicals in the liver to
form the waste product “UREA”. The urea is released into the bloodstream and carried to the kidneys
where it is filtered out of the blood and excreted in the urine.
WHAT DOES THE TEST MEASURE?
This test measures the presence of urea in the urine.
FREQUENTLY ASKED QUESTIONS:
How is this test performed?
This test is performed on a urine sample.
What are the risks associated with this test?
There is no significant risk associated with this test.
Is there any preparation required before the test?
No preparation required before this test.
What other tests are used to check the proper functioning of the kidneys?
Urea and creatinine are often the first tests that are used to check how well the kidneys are able to filter
the waste products from the blood. Other tests include electrolyte tests such as sodium, potassium,
or calcium to help understand how well the kidneys are functioning.
INTERPRETATION OF THE RESULT:
High urea levels suggest poor kidney function, could be acute or chronic kidney diseases. However,
there are many factors besides kidney disease that can affect urea levels such as:
- Decreased blood flow to the kidneys as in congestive heart failure, shock, stress, recent heart attack or severe burns
- Bleeding from the gastrointestinal tract
- Conditions that obstruct urine flow
- Dehydration.