Experiencing fatigue, cracked lips, or a sore tongue? This test measures vitamin B2 (riboflavin), a vital nutrient that supports energy production, skin health, and eye function. It’s particularly useful for individuals with poor diet, absorption issues, or those at risk of B2 deficiency, such as vegans and vegetarians.

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What's in the test?
Vitamins
Vitamin B2
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How to prepare for your test
Prepare for your Vitamin B1 (Thiamine) Blood Test by following these instructions. Do not eat or drink anything other than water for 12 hours prior to your test. If you take medication then you are allowed to take it as you would normally. Take your sample at least 24 hours after any vitamin or mineral supplements. Wrap your sample in foil immediately after it is taken.
Test limitations
Reviews
FAQs
What is vitamin B2?
Vitamin B2 is in foods like almonds, whole grains, mushrooms, certain dairy products, eggs, brewer’s yeast, and some green vegetables.
What are the symptoms of vitamin B2 deficiency?
Although rare, vitamin B2 deficiency can occur. Symptoms include anaemia, fatigue, slowed metabolism, nerve damage, a swollen tongue, mouth sores and cracks, skin inflammation, sore throat, swelling of the mucous membranes, and mood changes.
How many B vitamins are there?
Altogether, there are eight B vitamins, each with its purpose and role within the body. The B vitamins are all water-soluble and crucial for cell metabolism, normal functioning of the central nervous system, and the formation of red blood cells. All the B vitamins we need should be available through our diet. The B vitamins help to convert food into fuel and metabolise fats and proteins.