QuestAssureD 25-Hydroxy and 1,25-Dihydroxyvitamin D, LC/MS/MSMain Content
Test Code: 16761
Includes: 92888 QuestAssureD™ 25-Hydroxyvitamin D (D2, D3), LC/MS/MS and 16558 Vitamin D, 1,25-Dihydroxy, LC/MS/MS
Methodology: Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Clinical Significance: Vitamin D originating from dietary and endogenous sources is converted to 25-hydroxyvitamin D in the liver, and subsequently to 1, 25-dihydroxyvitamin D in the kidney. Measurement of both the 1, 25-Dihydroxy and 25-Hydroxy forms provide insights into a variety of medical conditions such Vitamin D status in renal failure, differential diagnosis of primary, secondary and tertiary hyperparathyroidism. Differential diagnosis of hypercalcemia and type I and II inherited rickets.
Additional names: N/A
Supply: T05 - Red Top Tube (NO GEL) 10mL
Preferred Specimen: Serum
Preferred Volume: 1.5mL
Transport Container: Red Top Tube (NO GEL)
Transport Temperature: Room Temperature
Special Instructions: Fasting preferred, but not required. Collect blood in a standard red-top serum vacutainer® tube. Allow blood to clot at room temperature. Centrifuge and separate the serum from the cells immediately.
Specimen Stability: Room Temperature: 21 days
Reject due: Gross hemolysis, lipemia, icteris; Plasma; Serum not serparted from clot within 48 hours; Heparinized or EDTA Plasma
For additional supply or collection device information, please contact DLO's Customer Service at (800) 891-2917, option 2.