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Laboratory Test Directory

Vitamin B1 (Thiamine), Whole Blood

Components

Name Method Department Units
Vitamin B1 Quantitative High Performance Liquid Chromatography
Send Out nmol/L

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume
Preferred

Purple tube (EDTA)

3 mL 3 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 3 mL
Alternate

Green tube (Sodium heparin), No Gel

3 mL 3 mL
Stability

Refrigerated - 4 hour(s)
Frozen - 6 month(s)

Specimen Preparation

  • Do not centrifuge
  • If delay in transport is greater than 4 hours, freeze
  • Refrigerate immediately after collection

Reasons for Rejection

  • Non frozen specimen
  • Centrifuged specimen
  • Wrong collection tube
  • Collected in tube with gel separator
  • Specimen collected in glass tube

Comments

Do not centrifuge. Whole blood is the preferred specimen for thiamine assessment. Approximately 80% of thiamine present in whole blood is found in red blood cells.

CPT Code

  • 84425