Calcium – what do your numbers mean?
Have you had your calcium level measured and are unsure what the numbers mean? Here's a clear explanation of the normal range, what a too high or too low level can mean, and when it makes sense to get tested.
What is the normal range for Calcium?
What is the normal range for Calcium?
The normal range for calcium in the blood varies depending on age and laboratory methods. For adults over 18, it typically ranges between 2.20 and 2.55 mmol/L. In children and adolescents, it varies from 2.12 to 2.74 mmol/L for infants and gradually decreases to 2.10-2.58 mmol/L for teenagers. Pregnant women may have slightly lower values. These intervals can vary slightly between laboratories due to different measurement methods. Being close to the reference values can indicate early disturbances in calcium metabolism that should be investigated further.
What does a low level mean?
A low level of calcium in the blood, also called hypocalcemia, can cause symptoms such as tingling in the hands and feet, muscle cramps, and in severe cases, heart rhythm disturbances. The most common causes include vitamin D deficiency, kidney failure, and certain types of medication. Individuals with chronic diseases or poor nutrition are particularly vulnerable. Treatment often involves calcium and vitamin D supplements, and it is important to contact a doctor for proper diagnosis and treatment.
What does a high level mean?
A high level of calcium in the blood, known as hypercalcemia, can lead to symptoms such as fatigue, muscle weakness, nausea, and in severe cases, kidney stones or heart problems. Causes can include overactivity of the parathyroid glands, certain cancers, or prolonged immobilization. It is important to seek medical attention if hypercalcemia is suspected, as treatment depends on the underlying cause and may include fluid therapy or medication.
Get your Calcium level tested
At Celto, you can order a blood test for Calcium 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 necessary. After your purchase, you will receive an email with a link to our booking system, where you choose a time and place. The blood test itself is taken by authorized healthcare personnel 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 around 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 at the same laboratories used by your own doctor and the rest of the healthcare system – precisely the same quality and the same tests. You will receive your results directly on sundhed.dk within a few business days, and Celto will also send an easy-to-understand review of your values so you know what the numbers mean.