Common Test-Ordering Errors
Part 1: Misordered Tests
1,25-Dihydroxyvitamin D
PTH-related Peptide
Uroporphyrinogen III Synthase
Sunlight Exposure
April 2010
Sun-exposure is an important variable and explains the lower levels of vitamin D seen in individuals with dark skin, upon which sunlight has decreased effect, in the elderly and other populations confined indoors, and in the seasonal variations that are seen in some areas of the country that have greatly reduced sunlight in the winter months.
Sunlight Exposure |
Jump to section:
- Introduction
- Testing at Mayo Medical Laboratories
- Common Test-Ordering Errors
- Misordered Tests
- Vitamin D Assessment
- Vitamin D
- Vitamin D Assessment
- Sources of Vitamin D
- Vitamin D Pathway
- Sunlight Exposure
- Vitamin D Pathway
- Useful For
- Required Specimen Volumes
- Parathyroid Hormone (PTH)
- Porphyria Enzymes
- Conclusion
- Questions?
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