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Test Name

Vitamin E (Tocopherol)

CPT Code(s)

84446

Includes

Alpha-Tocopherol, Beta-Gamma-Tocopherol

Methodology

High Performance Liquid Chromatography (HPLC)

Reference Range(s)

Alpha-Tocopherol  
Adult 5.7-19.9 mg/L
Pediatric  
  Term Infants (Cord Blood) 1.8-5.8 mg/L
  4 Months-1 Year ≤9.1 mg/L
  1-2 Years 2.9-16.6 mg/L
  3-5 Years 5.5-11.8 mg/L
  6-8 Years 4.6-14.8 mg/L
  9-11 Years 6.2-14.3 mg/L
  12-17 Years 3.7-12.4 mg/L
Levels of alpha-tocopherol <5 mg/L are consistent with Vitamin E deficiency in adults
Beta-Gamma-Tocopherol  
Adult ≤4.3 mg/L
Pediatric 3-17 Years 0.5-3.8 mg/L

Clinical Significance

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.

Alternative Name(s)

Alpha-Tocopherol

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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 guidelines 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.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

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Vitamin E (Tocopherol)
931