Overview
Blood urea nitrogen (BUN) may be due to prerenal causes (cardiac decompensation, water depletion due to decreased intake and excessive loss, increased protein catabolism, and high protein diet), renal causes (acute glomerulonephritis, chronic nephritis, polycystic kidney disease, nephrosclerosis, and tubular necrosis), and postrenal causes (eg, all types of obstruction of the urinary tract, such as stones, enlarged prostate gland, tumors). Serum blood urea nitrogen (BUN) determinations are considerably less sensitive than BUN clearance (and creatinine clearance) tests, and levels may not be abnormal until the BUN clearance has diminished to less than 50%. Clinicians frequently calculate a convenient relationship, the urea nitrogen:creatinine ratio-serum BUN in mg/dL/serum creatinine in mg/dL.
What is Bun ?
Blood Urea Nitrogen (BUN) may be due to prerenal causes (Cardiac decompensation, water depletion due to decreased intake and excessive loss, increased Protein Catabolism, and high Protein Diet), Renal causes (Acute Glomerulonephritis, Chronic Nephritis, Polycystic Kidney Disease, Nephrosclerosis, and Tubular Necrosis), and Postrenal causes (Eg, all types of obstruction of the Urinary Tract, such as Stones, enlarged Prostate Gland, Tumors). Serum Blood Urea Nitrogen (BUN) determinations are considerably less sensitive than BUN clearance (and creatinine clearance) tests, and levels may not be abnormal until the BUN clearance has diminished to less than 50%. Clinicians frequently calculate a convenient relationship, the Urea Nitrogen:creatinine ratio-serum BUN in mg/dL/serum creatinine in mg/dL.
What is the Cost of Bun
The Price of a BUN Test is Rs. 150. However, cost of the test may fluctuate depending on following factors:
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Other tests advised along with BUN Test
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Offers or discounts
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Empanelment of the patient
What is the Purpose of the Bun ?
BUN Test is advised for following purposes:
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Diagnosis: If you experience symptoms such as changes in your Urine, swelling in your Arms or Legs, cramping in your Muscles, or frequent bouts of exhaustion, you may need to have your BUN measured.
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Screening: Regular medical checkups may involve a BUN test as part of a basic metabolic panel (BMP) or comprehensive metabolic panel (CMP) to screen for potential renal issues. If kidney disease runs in your family or you have a higher risk of developing it due to Diabetes, Cardiovascular issues, or other conditions, screening may be recommended.
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Monitoring: One way to monitor Kidney function over time is to measure BUN regularly. When assessing how well Renal disorders are being treated, a BUN test might yield pertinent information.
When is the Bun Recommended ?
If you have Kidney problems or are at risk for developing them, your doctor may advise a BUN test as part of a comprehensive examination. Usually, early kidney disease exhibits no symptoms at all. Kidney disease may be more likely to occur if you have:
Your doctor may get your BUN levels tested if you are having symptoms of later stage Kidney disease, such as:
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Frequent/reduced urge to urinate
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Fatigue
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Itching
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Muscle cramps
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Swelling in your legs, feet, or ankles
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Trouble sleeping
Preparation for Bun
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Unless otherwise directed by your doctor, there is no need for you to make any special preparations before the BUN Test.
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Other blood tests can be carried out in addition to a BUN Test. If your doctor advises you to have multiple tests at once, they may ask you to fast for a specific period of time prior to a blood test.
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Drink adequate water before sample collection.
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Follow the preparatory instructions as guided by your doctor.
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