CDOS

Vitamin B1, Whole Blood

Test Code: 121186

Performing Lab: LabCorp

CPT Code: 84425 001

Synonym

B(1) Vitamin, Whole Blood; Thiamine, Whole Blood

Specimen Type

Whole blood, FROZEN

Specimen Container

Lavender-top (EDTA) tube

Volume

1 mL

Minimum Volume

0.5 mL

Specimen Handling

Draw blood. Do NOT separate. Transfer to a plastic transport tube. FREEZE. To avoid delays in turnaround time when requesting multiple tests on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED.

Patient Prep

Blood samples should be collected before breakfast in the morning and prior to any medication.

Unacceptable Conditions

Use of anticoagulants other than EDTA plasma

Temperature

FREEZE

Methodology

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Stability

Frozen: 14 days

Result Code	Result Name	LOINC
121188	Vit. B1, Whole Blood	32554-8

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