Vitamin B2 (Riboflavin)
Vitamin B2, or riboflavin, is a B vitamin your body uses to release energy from food and to support the function of other B vitamins. This test measures your riboflavin status.
Riboflavin helps power your metabolism and supports healthy skin, eyes, and red blood cells. It also helps your body activate vitamin B6 and folate, so it connects to several nutrient pathways. Levels can be lower with limited dairy and plant intake or increased needs.
A high riboflavin level typically reflects supplementation and is not considered harmful, since excess water-soluble riboflavin is cleared by the body and can simply tint urine bright yellow. It rarely calls for action on its own. Unexpected results are best interpreted in context.
A low riboflavin level suggests your intake may be insufficient, which can affect energy, skin, and the function of related B vitamins. It sometimes accompanies broader nutritional gaps.
Labs provide a reference range, and low results may prompt a look at your overall diet. A clinician can help you interpret your value.
Sources
Educational context only, not medical advice or a diagnosis. Reference ranges vary by lab, age and sex; always discuss your results with a clinician.