Urea – what do your numbers mean?
Have you had your urea level measured and are unsure what the numbers mean? Here's a clear explanation of the normal range, what a high or low level can indicate, and when it makes sense to get tested.
What is the normal range for Urea?
What is the normal range for Urea?
The normal range for urea in the blood varies depending on age, sex, and physiological conditions. For adults between 18 and 49 years, the reference interval for women is between 2.6 and 6.4 mmol/L and for men between 3.2 and 8.1 mmol/L. For individuals over 50 years, the values are slightly higher: women 3.1-7.9 mmol/L and men 3.5-8.1 mmol/L. In pregnant women, the level is lower, typically between 1.7 and 4.9 mmol/L, while children have lower values that vary with age. These intervals may vary slightly between laboratories. Being close to the reference limits can indicate changes in kidney function, protein metabolism, or hydration status and should be evaluated in conjunction with symptoms and other tests.
What does a low level mean?
A low level of urea in the blood can be due to several factors. It may indicate low protein intake, liver insufficiency, or conditions with high diuresis, where the body excretes large amounts of fluid. Symptoms can include fatigue, muscle weakness, and weight loss, depending on the underlying cause. Particularly vulnerable groups include individuals with liver diseases, pregnant women, and those with inadequate nutrition. If the level is low, a doctor should be consulted for further investigation and possibly dietary adjustments or treatment of the underlying cause.
What does a high level mean?
An elevated urea level can be a sign of reduced kidney function, dehydration, or increased protein metabolism. Common causes include kidney disease, high protein intake, or conditions such as heart failure and major tissue damage. Symptoms may include nausea, vomiting, fatigue, and swelling. It is important to seek medical attention if the level is elevated, especially if there are accompanying symptoms. Treatment may include fluid therapy, dietary changes, or treatment of the underlying disease.
Get your Urea level tested
At Celto, you can order a blood test for Urea directly online – without a referral from your doctor and without long waiting times. We have over 34 blood sample collection points at public hospitals throughout Denmark, and your samples are analyzed at the same accredited laboratories used by the rest of the healthcare system. You will receive your results directly on sundhed.dk, just like all other blood tests from the public system.
How it works
When you order a blood test from Celto, you choose which markers you want to have tested – no doctor's referral needed. After your purchase, you will receive an email with a link to our booking system, where you choose time and location. The blood sample itself is taken by authorized healthcare professionals and typically only takes a few minutes.
Where you can get tested
Celto has over 34 blood sample collection points at public hospitals and clinics across Denmark. You choose the location that suits you best among our partners, and there are typically available times within a few days. Find your nearest sample collection point →
How to get your results
Your blood samples are analyzed in the same laboratories used by your own doctor and the rest of the healthcare system, with the exact same quality and tests. You will receive your results directly on sundhed.dk within a few working days, and Celto will also send an easy-to-understand review of your values so you know what the numbers mean.