Reticulocytes – what do your levels mean?
Have you had your reticulocyte 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 mean, and when it makes sense to get tested.
What is the normal range for Reticulocytes?
What is the normal range for Reticulocytes?
Reticulocytes are immature red blood cells that circulate in the bloodstream as part of erythropoiesis. The normal range for reticulocytes varies depending on age, sex, and the laboratory's analysis methods. For adult women, the reference interval is typically between 31-97 x 109/L, while for men it is 36-113 x 109/L. In children, the values vary significantly with age, for example 79-222 x 109/L for newborns (0-7 days) and 37-106 x 109/L for adolescents between 6-18 years. Pregnant women may have slightly higher values. Being close to the limit values can indicate changes in bone marrow activity, which can be physiological or pathological.
What does a low level mean?
A low level of reticulocytes can indicate reduced production of red blood cells in the bone marrow. This is often seen in conditions such as aplastic anemia, severe vitamin B12 or folate deficiency, or in chronic diseases that inhibit erythropoiesis. Symptoms can include fatigue, pallor, and dizziness. Particularly vulnerable groups include the elderly, individuals with poor nutrition, and patients with chronic diseases such as kidney failure. With a low reticulocyte count, a doctor should be consulted for further investigation, which may include blood tests to identify underlying causes such as deficiency conditions or bone marrow diseases.
What does a high level mean?
An elevated level of reticulocytes, also called reticulocytosis, can be a sign of increased bone marrow activity. This is often seen in hemolytic anemia, where red blood cells are broken down too quickly, or after acute blood loss, where the body tries to compensate by producing more red blood cells. Symptoms can include jaundice, dark urine, and fatigue. Elevated values can also occur during treatment with iron, vitamin B12, or erythropoietin. If the reticulocyte count is very high without an obvious cause, a doctor should be consulted for further investigations, as it may indicate serious conditions such as bone marrow diseases or chronic blood loss.
Get your Reticulocyte level tested
At Celto, you can order a blood test for Reticulocytes directly online – without a referral from your doctor and without long waiting times. We have over 34 sample collection sites 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 the 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 sample collection sites at public hospitals and clinics throughout 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 site →
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.