Published on April 07, 2015

Vitamin D

Gold Top

Tube Type

Vitamin D (25-Hydroxy), Vitamin D (25-OH)

See Important Comments

Test ID LAB535
CPT Code(s) 82306
Group/Individual Test Individual
Laboratory Immunology
Tube Station 30
Specimen Routine: 4 mL blood/serum separator/gold top blood collection tube
micro: 1.0 mL blood/2 gold or red top microcollection devices

Availability Routine: Monday-Friday(no weekends or holidays); Not available STAT
Turnaround Time 1-4 days
Interpretation Range
Vitamin D, Total (25-OH) Interpretation Ranges:
<10 ng/mL (Severe deficiency)
10-19 ng/mL (Mild to moderate deficiency)
20-50 ng/mL (Optimum levels)*
51-80 ng/mL (Increased risk of hypercalciuria)
>80 ng/mL(Toxicity possible)
*Optimum levels in the healthy population; patients with bone disease may benefit from higher levels within this range.
Adapted from 2011 IOM report.
Methodology: Diasorin Liason XL.  All specimens are tested by a quantitative, chemiluminescent immunoassay for the detection of total Vitamin D(25-OH)

Reviewed by jcarr on November 30, 2021

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514