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Vitamin D 25-Hydroxy Total

Important Note

This test is for measuring total Vitamin D-25 (D2 and D3 combined). This is the preferred order for assessing vitamin D status/deficiency and most accurately reflects the body's vitamin D stores. If separate determinations of D2 and D3 are needed, order 25-Hydroxyvitamin D2 and D3, Serum instead.

Additional Codes

25-Hydroxyvitamin Total

Icon & Photos

Mint Green Top (Lithium Heparin Gel)

 

Specimen Requirements

Preferred:
Container/Tube: Mint Green Top (Lithium Heparin Gel)
Minimum Volume: 1.0 mL 
Collection Instructions: Centrifuge within 2 hours
Also Acceptable:
Container/Tube: Gold Top (SST-Gel)

Specimen Stability

Ambient: 8 hours
Refrigerate: 48 hours
Frozen: aliquot for longer storage

Reference Range

BVH Lab:
Deficient: <20 ng/mL
Insufficient: 20-29 ng/mL
Sufficient: 30-100 ng/mL
Upper Safety Limit: >100 ng/mL

Methodology

Chemiluminescent Immunoassay

CPT

82306