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Vitamin B1 (Thiamine)

Reference Range

Thiamine, or vitamin B1, is involved in a number of functions in the body, including nervous system (axonal conduction) and muscular functioning (electrolyte flow in these cells), carbohydrate metabolism, enzymatic processes, and production of hydrochloric acid needed for digestion.

In whole blood, the reference range of vitamin B1 (thiamine) is 2.5-7.5 μg/dL, or 74-222 nmol/L.

A stimulation of over 20%-25% during a red blood cell transketolase measurement using thiamine pyrophosphate (TTP) indicates deficiency.

The exact range depends on the laboratory used.

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