Regularly scheduled blood tests comprise several necessary measurements, one of which is the level of Blood Urea Nitrogen (BUN). This particular measurement is essential in obtaining critical information about the overall health of a person’s kidneys. BUN testing plays a significant role in diagnosing and monitoring various medical conditions. 

In this informative blog post, we delve into the significance of blood urea nitrogen test, providing insight into the normal range of BUN levels, as well as detailing the potential causes of abnormal BUN readings.

What is BUN?

The Blood Urea Nitrogen test gauges the quantity of urea nitrogen present in the bloodstream. Urea nitrogen is a byproduct produced by the liver when it metabolizes proteins. The kidneys filter out this waste product to maintain a healthy equilibrium in the body. When the kidneys don’t work correctly, the amount of BUN in the bloodstream can rise beyond normal levels.

BUN Testing Procedure

To check one’s BUN level, a small blood sample is taken from a vein in the arm. This sample is sent to a lab for analysis, with the BUN level reported in mg/dL. It’s a straightforward blood test.

What are Normal BUN Levels?

BUN levels, or blood urea nitrogen levels, can vary depending on a variety of factors, including the laboratory, age, sex, and overall health of an individual. The reference range for BUN levels in adults is typically considered to be between 7 and 20 mg/dL. 

It is important to note, however, that BUN levels should be assessed in conjunction with other clinical factors to ensure an accurate diagnosis. By considering all of these factors, healthcare professionals can provide more effective and personalised care to their patients.

Indications of Abnormal BUN Levels

Increased BUN levels may be a sign of disease of the kidneys, such as acute or chronic kidney disease, which affects its function. Urea nitrogen may accumulate in the blood as a result of the kidney’s inability to filter and eliminate it effectively.

Dehydration can cause a spike in BUN levels. When the body doesn’t have enough fluids, the kidneys conserve water by producing less urine, which causes blood to thicken and BUN levels to rise.

Congestive heart failure may result in insufficient blood flow to the kidneys due to the heart’s decreased pumping capacity. BUN levels may rise and renal function may decline as a result of this.

Cirrhosis is one liver disease that can interfere with the liver’s capacity to create urea. As a result, BUN levels could be lower than usual, which would indicate liver impairment.

Blockages in the urinary tract, such as kidney stones or bladder tumours, can prevent urine from flowing normally. Due to poor urea nitrogen excretion, this obstruction may cause BUN levels to increase.

When there is bleeding in the digestive tract, it can lead to the entry of blood into the bloodstream, which can cause an increase in blood urea nitrogen (BUN) levels due to the breakdown of blood proteins. It is important to note that consuming a large amount of protein can also result in a temporary rise in BUN levels. However, this should not be a cause for concern as long as kidney function is normal. 

How Can I Get Ready for the Blood Urea Nitrogen test?

Inform your doctor of any medications you are taking prior to the blood test. Your doctor could advise you to stop taking any of these for a while if they could affect the test result.

You are allowed to eat and drink if you are merely having a BUN test. However, if you need to have any other blood tests, your doctor may advise you to fast before the test.

What Occurs Throughout the Test?

During your meeting with the lab for your urea in hyderabad; your blood will be drawn from a vein in your arm or the back of your hand by a lab technician. When the needle pierces your skin, you can experience a mild sting.

You can resume your regular activities right afterwards, but it could feel a little sore later.

The blood sample will be sent to a lab for evaluation by your doctor’s office. Depending on how quickly the laboratory and your doctor’s office can process the results, you should have them in a few days.

To Sum Up:

It is recommended to monitor BUN levels regularly, especially if there are pre-existing kidney issues or if experiencing symptoms such as abdominal pain, vomiting, or diarrhoea. If necessary, consultation with a healthcare professional is advised for further evaluation and management.