Order a vitamin B12 test and check your B vitamins

B vitamins are involved in numerous metabolic processes. A deficiency can develop gradually and go unnoticed until symptoms appear. If you want to buy a vitamin B12 test, this panel gives you a broader view than a single marker from the start.

By measuring B12, folate, B1 and B6 together, you can see how these vitamins relate to one another. It is a snapshot rather than a diagnosis, but a concrete way to check whether your B vitamin status is playing a part in how you feel.

This test may be relevant for men who:

• follow a restrictive or one-sided diet
• experience persistent fatigue, concentration difficulties or tingling that could relate to nutrition
• want to record a baseline of their B vitamins

Using this panel as a B12 deficiency test can also fit if you are mainly curious about your B12, but want to include the other B vitamins.

• Vitamin B12 (pmol/l, ref: 145-569): involved in your nerve function and the production of red blood cells.
• Folate (folic acid) (nmol/l, ref: 10-42): plays a role in cell division and DNA synthesis.
• Vitamin B1 (thiamine) (nmol/l, ref: 66.5-200): supports your energy metabolism and the transmission of nerve signals.
• Vitamin B6 (nmol/l, ref: 20-125): involved in your amino acid metabolism, the production of neurotransmitters and your immune defence.

You can read more about B12 on the page about vitamin B12.

Low levels of one or more B vitamins may be associated with fatigue, cognitive changes or neurological symptoms. Because B vitamins work together in metabolic pathways, a deficiency in one can sometimes affect the function of another.

This vitamin B panel may help identify whether your B vitamin status could be a contributing factor to how you feel. It does not give a ready-made conclusion, but measured values you can review alongside your symptoms.

Blood is drawn at a certified sample point. There are 700+ locations across the Netherlands, which you choose yourself after ordering.

This is a blood test without a referral: you do not need to see your GP first. You pick a location and time yourself, and the draw usually takes around 10 to 15 minutes and is done by trained staff.

This panel may be useful for persistent fatigue, difficulty concentrating, mood changes, or numbness and tingling that could have a nutritional component. If you want to buy a vitamin B12 test to check your intake, including the other B vitamins can add extra context.

If you notice your tiredness runs broader, the fatigue panel may fit better, as it also measures your thyroid, iron and blood sugar alongside vitamins.

Your results appear with a reference range for each vitamin. Values below the reference range may suggest insufficient intake or absorption, while values above the range could warrant further evaluation.

What counts as a healthy value varies by lab and person. A doctor can help interpret the results in the context of your diet, your symptoms and your overall health.

For this panel, no special preparation is usually needed. If you use B vitamin supplements, they can influence your result, so check with your doctor whether it is helpful to discuss them beforehand.

Bring your appointment confirmation and a valid form of ID to the sample point.

Your results are available online within a few working days in your personal dashboard, in a clear report with a reference range for each marker.

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