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VITAMIN B1, WHOLE BLOOD

Mnemonic

VIT B1

Synonym

Thiamine

Guidelines

Do not use to monitor thiamine supplementation. Use to determine thiamine deficiency.

Specimen Collection Requirements

Collect

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

Handling

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

Minimum Volume

3.0 mL

Transport

Frozen and protected from light

Rejection Criteria

Any specimen other than whole blood. Plasma separator tubes. Glass tubes. Clotted or non-frozen specimens.

Stability

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

Testing Information

Note

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

Performed

7 days/week

Reported

5-7 days

Method

High Performance Liquid Chromatography

Referral Lab

ARUP (80388)

Reference Values

Reference Values

70-180 mmol/L

CPT Codes

84425

Last Updated: Monday, July 31, 2017 03:14:52 PM


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