Vitamin B1 (thiamine) measures the level of this essential water-soluble vitamin in your blood. Thiamine is critical for energy metabolism, nerve function, and carbohydrate processing.
Category: Vitamins & Minerals
Also known as: vitamin b1, thiamine, thiamin, vit b1
Reference range: 70–180 nmol/L (Source: ABIM)
Standard unit: nmol/L
High values may indicate
High vitamin B1 levels are rare and generally not harmful, as excess thiamine is excreted in urine. Very high levels may reflect excessive supplementation.
Low values may indicate
Low vitamin B1 levels may indicate beriberi, Wernicke-Korsakoff syndrome (common in alcoholism), malnutrition, malabsorption, or prolonged diuretic use, and can cause fatigue, nerve damage, and heart failure.