Test Overview
Clinical Utility
Fat soluble vitamin. Deficiency causes extensive neuropathy in children and may be caused by bowel disease, pancreatic disease, celiac disease and cystic fibrosis.
Method
Liquid chromatography-tandem mass spectrometry (LC-MS/MS)
Result Included
Vitamin E
Aliases/Synonyms
Alpha-tocopherol
Specimen
Specimen Type
Gel-separator tubes are not acceptableSerum
Plasma (EDTA)
Plasma (Li Heparin)
Containers
Collection Containers
Red top (no additive);Lavender top (EDTA);Green top (Li heparin)
Volume
Sample Volume
2 mL
Minimum Volume
1 mL
Specimen Comment
Avoid gel separator tubes
Patient Preparation
Fasting (12 – 14 h) recommended but non-fasting is acceptable. Avoid vitamin supplementation for 24 hours prior to collection.
Collection & Handling
Handling Information
Store and submit specimen protected from light.
Store and send frozen.
Stability
| Ambient | Refrigerated | Frozen |
|---|---|---|
| Unacceptable | 28 days | 28 days |
Rejection Criteria
| Criteria | Specification |
|---|---|
| Hemolysis | Gross |
| Lipemia | Gross |
| Specimen | Gel-separator tube or not protected from light |
Performance & Interpretation
Turnaround Time
10 days
Results
Name
Units
Reference Range
Conversion
-
Vitamin Eµmol/L0 - <1 year: 5 - 50
1 - <12 years: 13 - 32
12 - <20 years: 12 - 31
20 - <40 years: 14 - 45
40 - <60 years: 16 - 58
≥60 years: 16 - 67mg/dL x 23.2
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| BVITEB | Vitamin E | 39762 | umol/L |
Test Version
Last Updated
2023-01-19