Test Directory

7538 Vitamin B1 (Thiamine)

Specimen Type
Specimen Stability
Reference Range
Serum-Foil Wrapped
2 Months
8 - 30 nmol/L

Specimen Requirements

Specimen Type: Serum-Foil Wrapped
Container: 1 Serum Red Top Tube
Temperature: Frozen
Preferred Vol: 2.00 mL
Min Vol: 1.00 mL


Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)


Tuesday - Saturday

Turn-Around Time



STRICT FROZEN. Separate Serum and Freeze within 1 hour of collectionin plastic vial-use amber container or foil wrap to protect from light. EDTA plasma from Lavender tube also acceptable; frozen and protected from light.

Clinical Utility

Vitamin B1 deficiency is most often associated with alcoholism, chronic illness and following gastric by-pass surgery. Prolonged deficiency causes beriberi. Plasma vitamin B1 is useful in evaluating nutritional assessment and compliance, while whole blood vitamin B1 is useful in evaluating body stores.

CPT Codes


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