Understanding your Urea results
This test measures the amount of urea in the blood, which is a natural waste product formed when the body digests protein. The kidneys filter this waste out through urine, making this test a helpful way to observe how well they are clearing waste.
What is the normal Urea range?
- India
- No India-specific national reference interval is published for this parameter; your lab's printed range is the most reliable comparison.
- International
- 15–40 mg/dL
Ranges vary by lab, method and equipment — the range printed on your own report is the one that applies to your result.
Source: [KDIGO, 2024]
What does a high Urea result mean?
A high level can mean your kidneys clear less well, you eat a lot of protein, or your body breaks down more protein. It is worth discussing with your doctor.
What does a low Urea result mean?
A low level can go with low protein intake or your liver making less urea.
What affects your Urea result?
Urea levels can change based on daily fluid intake, the amount of protein in recent meals, and temporary physical stress or illness.
- Protein in your diet
- Kidney waste clearing
- Hydration
- Liver function
- Fever or injury raising protein breakdown
Frequently asked questions
- What causes blood urea to be higher than expected?
- Your doctor will consider factors such as dehydration, a high-protein diet, or changes in how the kidneys clear waste. They typically review this result alongside other kidney markers to understand the overall picture.
- Can drinking less water affect my blood urea result?
- Yes, being low on fluids can concentrate waste products in the bloodstream. Doctors often consider your hydration status when interpreting this test.
- What is the difference between blood urea and BUN?
- Blood urea measures the entire waste compound, whereas BUN measures only the nitrogen part of that compound. Both tests provide doctors with similar insights into kidney function and protein metabolism.
- What is Urea?
- The liver forms this compound to package the nitrogen left over from breaking down protein. The kidneys then filter it into urine, so the level reflects both processes. You have this test to check how well your kidneys clear waste and how fast your body breaks down protein.
- What is a normal protein waste test range?
- A typical adult range is around 15–40 mg/dL. No India-specific national reference interval is published for this parameter; your lab's printed range is the most reliable comparison. Ranges vary by lab, method and equipment — the range printed on your own report is the one that applies to your result.
Full reference guide
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