Vitamin B12

Feeling Tired, Dizzy, or Foggy? It Could Be a B12 Deficiency.

Vitamin B12 is vital for your nervous system, red blood cell production, and energy levels — yet deficiency is surprisingly common, especially if you follow a plant-based diet. This test helps you find out if your levels are where they should be.

What this test includes:

This test measures the level of Vitamin B12 (cobalamin) in your blood — a nutrient essential for:

• Brain and nervous system function
• Healthy red blood cells
• Energy production and metabolism
• DNA synthesis

Why get tested?

Low Vitamin B12 can cause a wide range of symptoms, including:

• Tiredness and weakness
• Brain fog and memory issues
• Dizziness and light-headedness
• Pins and needles (nerve-related symptoms)
• Mood changes or low mood
• Pale skin or mouth ulcers

You're especially at risk if you:

• Follow a vegetarian or vegan diet (B12 is mostly found in animal products)
• Have digestive issues like coeliac disease or Crohn’s
• Are over 50, as absorption of B12 naturally declines with age
• Take medications like metformin or proton pump inhibitors (PPIs)

Knowing your B12 levels allows you to take action early — through diet or supplements — and avoid long-term complications like nerve damage or anaemia.