Vitamin B2 Benefits and Riboflavin Levels Interpretation
Vitamin B2 (riboflavin) is essential for energy production and cellular health. Normal levels typically range from 1 to 19 mcg/L in blood tests. Low levels suggest deficiency affecting metabolism and skin or nerve health, while high levels usually reflect supplementation. Understanding riboflavin benefits helps assess nutritional status and overall metabolic function.
Contents
Result interpretation Vitamin B2
What your result means based on common reference ranges
Vitamin B2 levels within range indicate adequate intake and support normal energy metabolism and cellular function.
Mildly elevated vitamin B2 levels usually reflect recent supplementation or fortified food intake without clinical toxicity risk.
Significantly high vitamin B2 levels suggest excessive supplementation or reduced renal clearance affecting vitamin excretion processes.
Low vitamin B2 levels indicate riboflavin deficiency, potentially leading to anemia, oxidative stress, and impaired metabolic function.
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What is Vitamin B2?
Vitamin B2 plays a central role in energy metabolism as part of coenzymes FMN and FAD, which are required for cellular respiration and red blood cell production. In a blood test, vitamin B2 levels reflect dietary intake and absorption efficiency. Deficiency can contribute to anemia, neurological dysfunction, and oxidative stress due to impaired cellular repair. Riboflavin also supports the conversion of vitamin B6 and niacin, linking it to broader metabolic pathways. Monitoring levels is useful in cases of malnutrition, chronic illness, or suspected vitamin deficiencies affecting energy balance and tissue health.
Reference ranges
Causes of abnormal values
Causes of low Vitamin B2
- • Poor diet — insufficient intake of B2-rich foods
- • Chronic alcoholism — impaired intestinal absorption and increased depletion
- • Malabsorption syndromes — reduced uptake due to gut disorders
- • Chronic diarrhea — decreased nutrient absorption time
- • Phototherapy exposure — accelerated riboflavin breakdown in infants
Causes of high Vitamin B2
- • High-dose supplementation — direct increase in circulating riboflavin levels
- • Fortified foods intake — excess dietary riboflavin elevates blood concentration
- • Recent meal rich in B2 — temporary postprandial increase
- • Kidney dysfunction — reduced excretion prolongs elevated levels
- • Liver disorders — altered vitamin metabolism and storage
- • Energy drink overuse — concentrated B-vitamin intake
Vitamin B2 in combination with other markers
Possible symptoms
- •Cracks at mouth corners (cheilosis)
- •Inflamed or red tongue (glossitis)
- •Light sensitivity and eye irritation
- •Seborrheic skin rash
- •Fatigue and low energy levels
When to see a doctor
Consult a doctor if vitamin B2 levels fall below 1 mcg/L or symptoms like mouth sores, fatigue, or skin issues persist. Seek evaluation if levels remain elevated despite stopping supplements, especially with suspected kidney or liver issues.
What to do if abnormal
- Increase intake of eggs, dairy, and leafy greens
- Adjust or reduce B2 supplements if levels are high
- Store foods away from light to preserve riboflavin
- Check for malabsorption if deficiency persists
- Limit excessive fortified foods and energy drinks
The information on this page is intended for general understanding of test results and does not replace medical consultation. Accurate interpretation requires considering other blood markers and individual factors.
Content is based on medical literature and used within the PulseBook analytical system.
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