Urea (BUN)
About This Test
Urea (often reported as BUN) is a waste product made in the liver from protein breakdown and cleared by the kidneys. When kidneys don’t filter well—or when you’re dehydrated—urea can rise. Low levels are less common and may reflect severe liver disease or very low protein intake. Doctors read urea together with creatinine and electrolytes to understand kidney function and hydration. This test is commonly included in routine chemistry panels to detect problems early.
Patient Preparation
No fasting needed. If possible, avoid high protein intake and heavy exercise the day before.
Best Time to Test
Anytime
Tests Included
Urea
Why is it done
Evaluation of fatigue, swelling, or reduced urine output; monitoring chronic kidney disease or dehydration; assessing effects of high-protein diets, GI bleeding, or certain medicines (e.g., diuretics); pre-procedure checks and routine screening alongside creatinine.
Home Sample Collection and Laboratory Analysis (Metro Manila, Philippines)
This is a laboratory test order with home sample collection and laboratory analysis. A licensed medical technologist visits your address in Metro Manila to collect the required sample using sterile, single-use collection materials. The specimen is then transported for processing at a partner laboratory, and the laboratory report is sent to your email once released.
Frequently Asked Questions
Do you offer home service in Metro Manila?
Yes. Klaro Health offers home sample collection across Metro Manila with free home visit for orders over ₱1,800, only ₱299 otherwise.
A licensed medical technologist visits your address at an agreed time to collect the required samples.
How do I book at home blood tests?
Choose your tests or package, add to cart, fill in patient details, select preferred time slot and pay online to book online in minutes. Next-day scheduling is usually available.
Do I need a doctor’s request?
If you have a lab order, you can also use our Upload Lab Request option and we’ll help you match and price the tests. You can place an order also without a lab request.
When will I receive my results?
Your sample is processed by a partner laboratory. Once released, the laboratory report is sent to your email. Results are released the next day for most tests.
Is fasting required?
It depends on the test. If fasting is needed, it will be stated on the product page under Patient Preparation.
Where do you offer at home blood testing?
We offer home service blood testing in Metro Manila, including Taguig (BGC), Makati, Quezon City, Manila, Pasig, Mandaluyong, San Juan, Marikina, Pasay, Parañaque, Las Piñas, Muntinlupa (Alabang), Caloocan, Valenzuela, Malabon, and Navotas.