Anemia blood test: iron, transferrin and B12 measured

An anemia blood test can help you understand whether your blood values point toward possible anemia. Instead of a single value, this panel measures several markers that together give a clearer view.

Hemoglobin is often the starting point: this protein carries oxygen in your red blood cells. A hemoglobin test on its own, however, does not say why a value is low. By adding iron status, a complete blood count and vitamin B12, the panel can offer context about the possible cause.

For busy professionals, this is an efficient way to get preventive insight into symptoms such as ongoing fatigue or low energy.

This test may suit people who:

• have symptoms such as fatigue, pallor, dizziness or shortness of breath
• previously had low hemoglobin and want to investigate the cause further
• have a higher risk of blood loss, for example through heavy periods
• want to check whether their blood cell and iron values fall within expected ranges

Many people search for an anemia test to make sense of their symptoms. This panel is meant as a first step, after which you can discuss the results with a doctor.

This anemia panel measures seven markers:

• Hemoglobin: the oxygen-carrying protein in red blood cells; a low level is a hallmark of anemia.
• Complete blood count (CBC): gives information on your red and white blood cells and platelets, including the size of your red blood cells.
• Ferritin: reflects the iron stores in your body.
• Iron: the amount of iron circulating in your blood at that moment.
• Transferrin: the protein that transports iron around your body.
• Transferrin saturation: the percentage of transferrin that is actually carrying iron.
• Vitamin B12: needed for the production of red blood cells; a deficiency can cause its own type of anemia.

You can read more on the pages about hemoglobin, the complete blood count and vitamin B12.

The markers work together to provide context. A low hemoglobin with low iron stores may, for example, point toward anemia caused by iron deficiency, while a low vitamin B12 with changes in the size of your red blood cells may point to a different type.

A single value does not confirm a diagnosis. It is the pattern across several markers that can help you and a doctor decide on next steps. Normal iron status with a low hemoglobin, for instance, may point to other causes.

For this test, blood is drawn at a certified sample point. There are 650+ locations across the Netherlands, which you choose yourself after ordering.

You do not need to see your GP first: this is a blood test without a referral. You pick a location and a time that suit you. The draw is done by trained staff and usually takes only a few minutes.

An anemia test can be useful when:

• you have symptoms that could relate to anemia, such as ongoing tiredness or dizziness
• you have been told your hemoglobin is low and want to understand the cause
• you have risk factors for blood loss, such as heavy periods
• you want to look at your iron and B12 status alongside your blood cell values

Unlike a self-test at home, your blood here is analyzed in a certified lab and reviewed by a doctor.

Each marker appears with your value and its reference range. Hemoglobin below the reference range may point to anemia, but the type and cause depend on the pattern of the other markers.

Small red blood cells with low iron stores, for example, suggest a different cause than large red blood cells with a low B12. What counts as a healthy value varies by lab, age and timing, so a number on its own says little. Only a doctor can properly interpret your result.

Your results are available online within a few working days. You see your values with reference ranges and a clear explanation for each marker. If any values fall outside the expected range, this is clearly indicated.

Every blood test result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.