The clinical indications for performing BUN test are:
The healthcare provider may also order BUN test to help diagnose other conditions such as liver failure, gastrointestinal bleeding, urinary tract obstruction, and congestive heart failure. However, in such cases, additional tests would be required, prior to confirming any such diagnosis.
A BUN test result only confirms if there is an increased breakdown of protein, or a decreased excretion of urea.
Sample required: Blood
Process: Insertion of needle into a vein (arm).
Preparation required: None; however, some medications may cause an increase or decrease of Blood Urea Nitrogen levels. The healthcare provider shall be kept informed about all current medications being taken by the individual, prior to the test being conducted
Normal BUN range is usually 8-24 milligram/deciliter for adult men and 6-21 milligram/deciliter for adult women. The levels may vary according to the age or different laboratories performing the test. The healthcare provider interprets the result considering all these factors.
Urea nitrogen levels are higher than normal in the following cases:
Urea nitrogen levels are lower than normal in the following cases:
The laboratory test results are NOT to be interpreted as results of a "stand-alone" test. The test results have to be interpreted after correlating with suitable clinical findings and additional supplemental tests/information. Your healthcare providers will explain the meaning of your tests results, based on the overall clinical scenario.
Certain medications that you may be currently taking may influence the outcome of the test. Hence, it is important to inform your healthcare provider, the complete list of medications (including any herbal supplements) you are currently taking. This will help the healthcare provider interpret your test results more accurately and avoid unnecessary chances of a misdiagnosis.
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