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VITAMIN B1, PLASMA

Mnemonic

VIT B1 P

Synonym

Thiamine

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

Plasma, one green (sodium or lithium heparin) or lavender (EDTA) top tube

Handling

Separate plasma from cells within one hour of collection. PROTECT FROM LIGHT within one hour of collection, during storage and transport.

Preferred Volume

3.0 mL

Minimum Volume

0.2 mL

Transport

Frozen

Rejection Criteria

Specimens not protected from light, hemolyzed or specimens other than heparin or EDTA plasma.

Stability

AFTER SEPARATION FROM CELLS: Ambient: Unacceptable; Refrigerated: 1 week; Frozen at-20°C: 6 months

Testing Information

Note

Separate specimens must be submitted when multiple tests are ordered. 

Performed

7 days/week

Reported

2-7 days

Method

Quantitative High Performance Liquid Chromatography

Referral Lab

ARUP (0080389)

Reference Values

Reference Values

Interpretation provided.

CPT Codes

84425

Last Updated: Friday, September 29, 2017 01:58:44 PM


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