Vitamin B2 - Deficiency Test
The serum vitamin B2 test evaluates serum levels of vitamin B2 (riboflavin), a vitamin essential for growth and tissue function. The serum test is considered more reliable than the urine vitamin B2 test, which can produce artificially high values in patients after surgery or prolonged fasting.
Procedure and posttest care
Normal test results are 3 to 15 ug/dl; 2 to 3 ug/dl is considered marginally low, and less than 2 ug/dl is considered significantly diminished.
Marginally low test results « 3 ug/dl) indicate vitamin B2 deficiency. Such deficiency can result from insufficient dietary intake of vitamin B2, malabsorption syndrome, or conditions that increase metabolic demands such as stress.
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