Test Directory

Thiamine (Vitamin B1), Whole Blood

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Updated Test Information:

Test Description
Thiamine (Vitamin B1), Whole Blood
Synonym(s)
Thiamin (Vitamin B1)
Test ID
TDP
General Information
Useful for:
Assessment of thiamine deficiency
Measuring thiamine levels in patients with behavioral changes, eye signs, gait disturbances, delirium, and encephalopathy; or in patients with questionable nutritional status, especially those who appear at risk and who also are being given insulin for hyperglycemia
Specimen Type
Whole Blood
Specimen Requirements
Lavender
Specimen Collection / Processing Instructions
Lavender - 1.Invert 8 to 10 times to mix blood. 2.Transfer whole blood into amber vial or tube and freeze within 24 hours of collection.
Stability
Frozen 28 days
Unacceptable Specimen Conditions
Gross lipemia Reject
Other Glass vial Clotted specimen
Methodology
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Estimated TAT
2-5 days
Testing Schedule
Monday-Friday
CPT Code(s)
84425
Minimum Sample Volume
0.5 mL
Reference Range
70-180 nmol/L
Performing Lab
Mayo
LOINC Code(s)
32554-8