THIAMINE, VITAMIN B1 WHOLE BLOOD

Mnemonic

<b><span style='color:red'><u>VITB1</span></u></b>

Synonym

VITAMIN B1, WHOLE BLOOD

Guidelines

Whole blood is the preferred specimen for thiamine assessment. Approximately 80% of thiamine present in whole blood is found in red blood cells.

Specimen Collection Requirements

Collect

Whole Blood, one green (sodium or lithium) or lavendar (EDTA) top tube

Handling

CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Protect from light within one hour of collection and during storage and shipment.

Preferred Volume

5.0 mL

Minimum Volume

3.0 mL

Transport

Frozen and protected from light

Rejection Criteria

Any specimen other than whole blood. Nonfrozen specimens and specimens in glass tubes.

Stability

Ambient: Unacceptable, Refrigerated: 4 hours, Frozen: 6 months

Testing Information

Performed

7 days/week

Method

High Performance Liquid Chromatography

Referral Lab

ARUP (80388)

Reference Values

Reference Values

70-180 mmol/L

CPT Codes

84425

Last Updated: Thursday, January 5, 2017 03:42:31 AM