Test directory: Vitamin D, 25-Hydroxy (D2 & D3)

Ordering Code5679
Test NameVitamin D, 25-Hydroxy (D2 & D3)
Alias25-Hydroxy-Vitamin D3
25-Hydroxy Vitamin D2
Vitamin D2, 25-Hydroxy
Vitamin D3, 25-Hydroxy
Preferred SpecimenSerum
Preferred ContainerSST (Gold)
Other Specimen/ContainerSerum in Plain (Red)
Optimum Volume1 mL
Collection InstructionsAllow to clot at room temp., centrifuge and remove from gel within 48 hours. Fasting specimen preferred but not required.
Handling InstructionsSeparate serum promptly
Freeze and thaw acceptable.
Transport RequirementsOahu: Ambient
Airline: Ambient
Specimen StabilityAmbient: 3 Weeks
Refrigerated: 3 Weeks
Frozen: 3 Weeks
Rejection CriteriaGrossly hemolyzed, grossly lipemic, grossly icteric, Serum not separated from SST gel or not clotted within 48 hours,
Samples out of stability range
Avail. StatNO
Analytic TimeUp to 5 Days
MethodologyLiquid Chromatography Tandem mass Spectrometry
Reference Lab Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of April 19, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Vitamin D, 25-OH, TotalALLSee report.
Vitamin D, 25-OH, D3ALLSee report.
Vitamin D, 25-OH, D2ALLSee report.