Vitamin D, Total

Test Code

VITDC

Includes

Includes total level.

Preferred Specimen

1.0 ml serum

Patient Preparation
Fasting preferred, but not required

Minimum Volume

0.5 ml

Other Acceptable Specimens

Heparinized plasma

Instructions

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

Room Temperature: 1 day
Refrigerated: 6 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Moderate hemolysis • Grossly lipemic • Plasma

Methodology
.

Setup Schedule

Daily

Report Available

Same day.

Reference Range

See Report

Clinical Significance

Measurement of serum 25-OH vitamin D concentrations provide a good index of circulating vitamin D activity in patients not suffering from renal disease. Lower than normal 25-OH vitamin D levels can result from a dietary deficiency, poor absorption of the vitamin or impaired metabolism of the sterol in the liver. A 25-OH vitamin D deficiency can lead to bone diseases such as rickets and osteomalacia. Above normal levels can lead to hypercalcemia

The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.