Vitamin B1 (Thiamine), Blood, LC/MS/MS
Order Code:
VITB1
Test Summary
Vitamin B1 is required for branched-chain amino acid and carbohydrate metabolism. Vitamin B1 deficiency is most often due to alcoholism or chronic illness. In the early stage, patients with vitamin B1 deficiency exhibit anorexia, irritability, apathy, and generalized weakness. Prolonged deficiency causes beriberi.
Aliases
- Thiamine Whole Blood
Specimen Collection
Special Instructions
N/A
Preferred Specimen
2 mL Whole Blood collected in an EDTA (lavender-top) tube protected from light.
Minimum Volume
1 mL
Instructions
See Vitamin Collection Link
Patient Preparation
Overnight fasting is required.
Storage
Amber transport tube, light-protected
Transport Temperature
Frozen
Specimen Stability
- Room temperature: 8 hours
- Refrigerated: 5 days
- Frozen: 35 days
Limitations
N/A
Other Acceptable Specimens
no other acceptable specimen types
Unacceptable Specimens
Received room temperature and not protected from light • Received refrigerated and not protected from light
Order Code
VITB1
EPIC (Premier) Code
LAB420
Includes
N/A
CPT Code
- 84425
Billing Code
- 670753
CPT Statement
Methodology
Chromatography/Mass Spectrometry
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
78-185 nmol/L
Setup Schedule / Expected Turnaround Time
Monday - Saturday; Report available: 2 - 3 days
Resources
Specimen Collection
Special Instructions
N/A
Preferred Specimen
2 mL Whole Blood collected in an EDTA (lavender-top) tube protected from light.
Minimum Volume
1 mL
Instructions
See Vitamin Collection Link
Patient Preparation
Overnight fasting is required.
Storage
Amber transport tube, light-protected
Transport Temperature
Frozen
Specimen Stability
- Room temperature: 8 hours
- Refrigerated: 5 days
- Frozen: 35 days
Limitations
N/A
Other Acceptable Specimens
no other acceptable specimen types
Unacceptable Specimens
Received room temperature and not protected from light • Received refrigerated and not protected from light
Result Information
Methodology
Chromatography/Mass Spectrometry
Testing Laboratory
N/A
Reference Range
78-185 nmol/L
Setup Schedule / Expected Turnaround Time
Monday - Saturday; Report available: 2 - 3 days