| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Vitamin B1 (Thiamine), Blood, LC/MS/MS : 5042
Test CodeVB1TB or 5042
Alias/See Also
Thiamine, B1
CPT Codes
84425
Instructions
Protect from light.
Transfer whole blood to amber plastic transport tube. If amber tube is not available, wrap tube in aluminum foil to protect from light. Freeze immediately.
Transfer whole blood to amber plastic transport tube. If amber tube is not available, wrap tube in aluminum foil to protect from light. Freeze immediately.
Transport Container
Overnight fasting is required.
Preferred Specimen:
2 mL whole blood collected in an EDTA (lavender-top) tube - protected from light
Minimum Volume
1 mL
Preferred Specimen:
2 mL whole blood collected in an EDTA (lavender-top) tube - protected from light
Minimum Volume
1 mL
Transport Temperature
Frozen.
Specimen Stability
Room temperature: 8 hours; Refrigerated: 5 days; Frozen: 35 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature and not protected from light, Received refrigerated and not protected from light; Specimen received over 8 hours at room temperature.
Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Setup Schedule
Tuesday - Saturday
Report Available
3 days
Reference Range
78-185 nmol/L
Clinical Significance
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.
Performing Laboratory
med fusion
