Last Modified:
5/18/2023 8:45:20 AM
Medical Necessity Documentation:
Client Notes:
Patient Preparation:
Overnight Fasting
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 Requirements:
3.0 mL Frozen Plasma from a Lavender Top Tube (EDTA) in a Amber Vial
Collection Instructions:
Separate cells by centrifugation at 2-8° C for 8-10 minutes; Centrifuge and remove from cells within 4 hours of collection.
Protect from Light by placing in a Amber vial
Freeze immediately
Minimum Volume:
1.0 mL Plasma
Transport & Storage: Temperature/Stability:
1 month Frozen
Avoid Thaw/Freeze Cycles
Rejection Criteria:
Lipemic, Hemolyzed, Ambient, Refrigerated, not protected from light
Reference Range:
Adults: 8-30 nmol/L
Critical Ranges:
Test Comments:
Methodology:
Liquid Chromatography, Tandem Mass Spectoscopy
Clinical Significance:
Documentation:
Custom Panel:
No
PRODUCTION SCHEDULE
Turn Around Time:
5 to 8 days
Days Performed:
Monday, Tuesday, Wednesday, Thursday, Friday
Sites Performed:
Quest - Chantilly
PHL Test Code:
VITB1
EPIC Test Code:
LAB2513
Send Out Test Code:
90353
Alternate Test Names:
Thiamine
Included Tests:
CPT Coding:
84425
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