Thursday 24 May 2018

Kidney Function Test: What You Need to Know


Kidney plays a huge role in keeping patients’ overall health condition. Yet, the most critical role of kidney is filtering different waste materials coming from the blood and release it out of the body through urine. The kidney is also responsible for controlling the level of water and other minerals in the human’s body.

They are also needed in the production of:

  • Red blood cells
  • Vitamin D
  • Hormones that control blood pressure

In the event that your doctor notices abnormality on how your kidney functions, he or she will order kidney function test. The simple urine and blood testing can pinpoint problems in your kidney. This may also be required if the patient has other conditions affecting his or her kidneys, like escalating blood pressure and diabetes.

There are different symptoms, when a doctor may order kidney blood test or function test. And these are:

  • There is a blood in patient’s urine
  • Fluctuating blood pressure
  • Frequent need to urinate
  • Difficulty starting urination
  • There is a pain when urinating
  • There is a swelling on either hands or feet or both because of fluid build-up in a patient’s body

If a patient experiences just one of the above, it might not automatically means the case is serious. But, when problem is persistent and simultaneous, it can be a sign that kidney is not functioning right. And this is where blood test for kidney function and kidney function test comes to play.

Types of tests

To test the function of the kidney, Urinalysis, Serum Creatinine Test and Blood Urine Nitrogen or BUN may be ordered.

Urinalysis

This will screen whether there is blood and protein in the patient’s urine. Although, not all the time presence of protein in urine means kidney problem as there are other reasons why this may occur.

Serum creatinine test

This type of kidney blood test checks whether there is creatinine building up in the patient’s blood The kidney should filter completely the creatinine from the human’s blood, hence when creatinine is high, kidney problem is possible.

BUN (Blood Urine Nitrogen)

This blood test measures the consistency of nitrogen to the human’s blood. Although not all increased BUN test result means kidney damage, as large intakes of aspirin and other antibiotics can contribute to its elevation. It is necessary that the patient tells his or her doctor about the medication he or she is taking to filter results.


Normal level should be between seven and twenty mg/dL. Higher result may suggest different health issues.

Consulting a professional doctor is necessary to ensure proper diagnosis will be done to your kidney. If diagnosis is done wrongfully, you will have no chance of treating the kidney issue properly.