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This Vitamin B2 Test, sometimes referred to as a riboflavin test, is used to measure the amount of vitamin B2 (riboflavin) in the blood. Vitamin B2 is responsible for energy production and enzyme function as well as fatty and amino acid synthesis. Those with vitamin B2 deficiencies are subject to tongue sores, chapped lips, and scaly skin rashes. Vitamin B2 deficiencies can be reliably identified with this Vitamin B2 Test and are most common in those with kidney disease, hyperthyroidism, cirrhosis, or those who drink heavily.
Testing Method: Blood draw
Test Preparation: Fasting is required (i.e. no eating or drinking anything besides water for 8 hours prior to testing)