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Lab Manual for Moffitt-Long and Mount Zion

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Vitamin D, 1,25-Dihydroxy-

Item Value
Approval req'd? No
Available Stat? No
Test code VDHD
Performed by Quest
Sendout? Yes
Method Liquid chromatography, Tandem mass spectrometry
Container type Gold top
Amount to Collect 6 mL blood
Sample type Serum
Preferred volume 3 mL serum
Min. Volume 1.5 mL serum
Processing notes Freeze serum at -20C in plastic tube. Order Quest # 16493P. For B&T patients order LabCorp test # 081091
Ref Lab Rejection Criteria If sample is submitted with < 1.1. mL and requires repeat the test will be canceled.
Units pg/mL
Normal range
3-17 years 27-71 pg/mL
≥ 18 years 15-60 pg/mL
Synonyms DHD; calcitriol
Stability Room temperature 3 hours, , refrigerated 3 days, or frozen at -20C 1 year.
Turn around times Test performed 6x per week. Turnaround time: 9-10 days.
CPT coding 82652-90
LOINC code 1649-3
Last Updated 10/2/2010 11:52:47 AM
Entry Number 1001
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