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Vitamins

Vitamin B2 (Riboflavin)

Vitamin B2 (riboflavin) is considered essential for energy metabolism and antioxidant defence during intense physical activity. Active individuals may have increased requirements. A sports medicine professional can help assess your optimal levels.

Doctor's Assessment Included

Reference Ranges

See the value that applies to you:

Choose male or female — this range differs by sex.

Enter your age — this range changes with age.

This range also depends on context such as cycle phase or sample material; the highlighted rows apply to your group.

Male Your group
nmol/l
Low 6.2 Normal 39 High
Female Your group
nmol/l
Low 6.2 Normal 39 High

Reference ranges may vary between laboratories. When you order a test, a BIG-registered doctor assesses your personal results in context. For treatment decisions, discuss your results with your GP.

Check your own value

What It Measures

This test measures riboflavin (vitamin B2) levels in your blood, expressed in nmol/l. It may help assess whether your body has adequate riboflavin for energy production and antioxidant defence. Your healthcare provider can interpret results within your clinical context.

Why It Matters

For active individuals, riboflavin may be crucial for converting food into energy and protecting muscles from oxidative damage during training. Suboptimal levels have been associated with decreased performance and slower recovery. Consult a sports medicine professional.

When to Test

Testing may be considered when experiencing persistent mouth sores, cracked lips, skin inflammation, or light sensitivity. Healthcare providers may also suggest testing for individuals with restrictive diets, malabsorption conditions, or those taking certain medications.

Symptoms

Low Levels

Some people with low vitamin B2 may experience cracked or sore lips, mouth ulcers, a sore throat, skin rashes, or sensitivity to light. Fatigue and eye irritation have also been reported. A healthcare provider can help determine if B2 deficiency is the cause.

High Levels

Elevated vitamin B2 levels are generally considered uncommon as excess riboflavin is typically excreted in urine. Some people may notice brightly coloured urine with high intake. If your levels appear elevated, your healthcare provider can advise on next steps.

Lifestyle Tips

Foods considered rich in riboflavin include dairy products, eggs, lean meats, green vegetables, and fortified cereals. Some people may benefit from including a variety of these foods daily. Discuss any dietary concerns with your healthcare provider or dietitian.

Frequently Asked Questions

What is the role of vitamin B2 in the body?
Vitamin B2 (riboflavin) is believed to serve as a coenzyme in energy metabolism and help protect cells from oxidative damage. It may also support the activation of other B vitamins. Consult your healthcare provider for more detailed information about your specific needs.
Can vitamin B2 deficiency affect my skin?
Low riboflavin levels have been associated with skin inflammation, cracked lips, and mouth sores in some individuals. These symptoms may also have other causes. A healthcare provider can help determine if B2 deficiency is contributing to skin concerns.
Do I need more vitamin B2 if I exercise regularly?
Some research suggests that physically active individuals may have slightly higher riboflavin requirements due to increased metabolic demands. However, individual needs vary. Discuss your specific requirements with a healthcare provider or sports nutritionist.

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These panels measure values from the same category as this marker.

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