Folate (B9) – what do your levels mean?
Have you had your Folate (B9) level measured and are unsure what the numbers mean? Here you will find a clear explanation of the normal range, what high or low levels can mean, and when it makes sense to get tested.
What is the normal range for Folate (B9)?
What is the normal range for Folate (B9)?
The normal range for folate (B9) in the blood varies depending on age and laboratory. Generally, the reference interval for adults over 18 years is >9 nmol/L, while for children between 1 and 18 years it is between 6-35 nmol/L. For infants under 1 year, the interval is 15-50 nmol/L. These values may vary slightly depending on the laboratory's measurement methods and reference population. It is important to be within the normal range, as both low and high values can indicate underlying health problems. If you are close to the limit values, it may be a sign of incipient deficiency or excess, and further investigations may be necessary.
What does a low level mean?
A low level of folate can lead to symptoms such as fatigue, dizziness, shortness of breath, and paleness, as it often results in macrocytic anemia. The most common causes include inadequate diet, alcohol abuse, malabsorption conditions such as celiac disease or Crohn's disease, and increased need during pregnancy. Particularly vulnerable groups are pregnant women, the elderly, and individuals with chronic illness or alcoholism. Treatment typically involves folic acid supplementation and addressing the underlying cause. It is important to seek medical attention if you experience symptoms of deficiency, as untreated folate deficiency can lead to serious health problems, including birth defects in pregnant women.
What does a high level mean?
A high level of folate in the blood is rare and is often due to an overdose of supplements. Symptoms are rare but may include stomach problems and sleep disturbances. In some cases, high levels can mask a vitamin B12 deficiency, which can lead to neurological damage if not detected in time. If you have a high level, you should reduce your intake of folic acid supplements and consult a doctor for further evaluation. It is especially important to seek medical attention if you have underlying diseases or are taking medication that can affect folate levels.
Get your Folate (B9) level tested
At Celto, you can order a blood test for Folate (B9) 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 can choose a time and location. The blood sample 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 throughout Denmark. You choose the location that suits you best among our partners, and there are typically available appointments within a few days. Find your nearest blood 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, with the exact 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.