Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

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VITAMIN B1

SPECIMEN COLLECTION
Test code:
VITAB1
Specimen type:
Plasma (preferred) or serum.
Preferred collection container:
Alternate Collection Container:
6 mL red-top (plain, non-serum separator) tube
Specimen Required:
2 mL aliquot of plasma (preferred - two 2 mL tubes or one 6 mL tube) or serum; minimum 1 mL. Please submit a separate frozen aliquot for this test. It may not be combined with any other test requiring a frozen aliquot.
Special notes:
Serum separator tubes are NOT acceptable. Wrap tube in aluminum foil to protect from light.
Patient preparation:
Overnight fasting is preferred. Patient is to be restricted from alcohol, coffee, tea, raw fish, liver, pork, sausage, and vitamins for at least 24 hours before sample collection

SPECIMEN PROCESSING
Specimen processing instructions:
Centrifuge 10 minutes at 3000 rpm. Freeze plasma or serum specimens immediately after separating from cells. 
Transport temperature:
Protected from light; frozen.
Specimen stability:
Room Temperature: 24 hours. Refrigerated: 48 hours. Frozen: 1 month.
Rejection criteria:
Samples not received frozen and not protected from light. Specimens collected in serum separator tubes, lipemic and hemolyzed specimens will also be rejected

TEST DETAILS
Reference interval:
Adults 8-30 nmol/L.
CPT code(s):
84425
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Vitamin B1.
Methodology:
Liquid Chromatography/Tandem Mass Spectrometry
Synonyms:
Thiamin
Quest test code 90353

Performing Locations

Quest Diagnostics
Technical Lead: Michael Weaver    
Frequency: Monday, Wendesday, Friday morning    
Performed stat? N
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