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Test Code VITD Vitamin D 25-Hydroxy

Specimen Type

Blood

Preferred Collection Container

GRN-PST

Collection Volume

5 mL

Minimum Collection Volume

1 mL

Collection Instructions

Collect blood in an acceptable container. Centrifuge, aliquot into a plastic vial. Avoid prolonged exposure to light.

Rejection Criteria

Ambient > 72 hours; Refrigerated > 7 days; Frozen > 1 year; Specimen not stored tightly stoppered; Freeze/Thaw cycle > 3 times; Grossly hemolyzed; Grossly lipemic; Inadequate labeling; Improper collection; Insufficient volume.

Specimen Storage and Stability

Ambient: <72 hours; Refrigerate: 7 days

Turn Around Time

2 hours

Lab Department

Chemistry

Alias

Calcidiol; 25-hydroxy Vitamin D; Vitamin D 25 Hydroxy; 25 Hydroxycholecalciferol; 25 Hydroergocalciferol; D2; D3; Total Vitamin D

Ordering Info

Useful for assessing vitamin D stores or diagnosing vitamin D deficiency or toxicity.

EPIC Code

LAB535

Acceptable Collection Container

SST, R-NoGel; GRN-PST, G-NoGel

Testing Volume

0.5 mL (500 ul)

Day(s) and Time(s) Performed

Monday through Sunday, 24 hours