Vitamin D Testing

Various Vitamin D Tests

January 2009

We already discussed that there are three different forms of vitamin D in circulation, so we can have three different forms of vitamin D tests. Vitamin D itself has not been commonly used; 25-hydroxy vitamin D is the most commonly used test for determining vitamin D deficiency. The question arises, what is the use of 1,25-dihyrdox vitamin D in pt care?

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Various Vitamin D Tests

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Jump to section:

• Introduction
• Objectives
• Rickets
• UVB Light
• Vitamin D Deficiency
• Interaction Between Vitamin D and Calcium
• Vitamin D3
• Vitamin D2
• Various Vitamin D Tests
• History of 25-OH Vitamin D Testing
• Accreditation Agencies for Precision Among Peers
• Quality of the 25-OH Vitamin D Testing
• 25-OH Vitamin D Volume
• Reference Ranges for 25-OH Vitamin D
• Various Vitamin D Tests
• Case Study - Rickets in a Premature Infant
• Birth History
• Ionized Calcium
• Fractures Identified on Routine Radiographic Surveillance for Line Placement
• Vitamin D Supplementation
• Lab Values After Vit-D Supplementation
• Mother's History
• Infant's X-ray
• Mother's Creatinine
• The Connection Between the Mother and the Infant
• Summary
• Questions?