Micronutrient, Vitamin E

Test code

10183

CPT code(s)*

84446

**CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.

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Clinical significance

Micronutrient, Vitamin E - Deficiency of Vitamin E may cause extensive neuropathy in young children and, in addition, is suspect as a possible cause of motor and sensory neuropathy in older children and in adults. One likely cause of Vitamin E deficiency is intestinal malabsorption, resulting from bowel disease, pancreatic disease, or chronic cholestasis. Other causes of malabsorption of Vitamin E include celiac disease, cystic fibrosis, and intestinal lymphangiectasia.

Test resources

None found for this test
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Details

Test details

Includes

Vitamin E, Alpha Tocopherol
Vitamin E, Beta-Gamma Tocopherol

Methodology

Chromatography

Assay category

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Specimen requirements
Patient preparation	Overnight fasting is required
Preferred specimen(s)	2 mL serum - protected from light
Minimum volume	0.7 mL
Collection instructions	Patients should be 18 years of age or greater. Separate from cells within 24 hours after clotting. Send serum in an amber tube. If an amber tube is not available, wrap tube in aluminum foil to protect from light.
Transport container	Amber transport tube
Transport temperature	Refrigerated (cold packs)
Specimen stability	Room temperature: 24 hours Refrigerated: 7 days Frozen: 28 days
Reject criteria	Gross hemolysis • Grossly lipemic • Received room temperature • Not protected from light • Plasma

Reference range(s)

Reference Range(s)

Vitamin E, Alpha Tocopherol

≥18 years

5.7-19.9 mg/L

Reference range not available for individuals <18 years for this micronutrient test.

Vitamin E, Beta-Gamma Tocopherol

≥18 years

<4.4 mg/L

Reference range not available for individuals <18 years for this micronutrient test.

LOINC® codes

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Service Area Information

Performing lab & setup schedule

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Service Area Information

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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