Micronutrient, Vitamin B1 (Thiamine), Blood
Use
Vitamin B1 (thiamine) is required for branched‑chain amino acid and carbohydrate metabolism. Deficiency is most often due to alcoholism or chronic illness. Early deficiency symptoms include anorexia, irritability, apathy, and generalized weakness; prolonged deficiency leads to beriberi. This test aids in diagnosing thiamine deficiency. (Quest Diagnostics Nichols Institute)
Special Instructions
Not provided.
Limitations
Not provided.
Methodology
Mass Spectrometry
Biomarkers
Result Turnaround Time
3-5 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
2 mL
Minimum Volume
1 mL
Container
EDTA (lavender‑top) tube; amber transport tube (or tube wrapped in aluminum foil if amber tube unavailable)
Collection Instructions
Protect from light; transfer to amber tube or wrap in foil; freeze immediately
Patient Preparation
Overnight fasting required
Causes for Rejection
Received not protected from light
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 5 days |
| Frozen | 35 days |
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