Vitamins & nutrition
Vitamin D, 25-Hydroxy (Calciferol)
About
Measures 25-hydroxy vitamin D, the main indicator of vitamin D status. Used to diagnose deficiency affecting bone and general health.
Preparation
For children under 1 year, do not feed for 30-40 minutes before the test. For children aged 1 to 5 years, do not eat for 2-3 hours before the test. Do not eat for 2-3 hours before the test; still (non-carbonated) water is allowed. Do not smoke for 30 minutes before the test.