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Nutrition / Vitamins

25-Hydroxy Vitamin D

Also known as: Ergocalciferol Test, Cholecalciferol Test, Vitamin D2 Test

CPT 86706Quest 1759LabCorp 006510
Critical — Seek Care

If you experience severe fatigue, confusion, frequent urination, nausea, vomiting, or bone pain, especially after taking vitamin D supplements, contact your doctor immediately or seek urgent care.

What It Measures

This test checks how much vitamin D is in your blood. This is the best way to see your body's vitamin D level. Vitamin D helps your body take in calcium. Calcium and other minerals are important for strong bones. They also help keep you healthy overall.

Why It's Ordered

Your doctor orders this test to check your vitamin D. It shows if you have too much or not enough. This helps find low vitamin D. It also checks your levels if you are already getting treatment.

Reference Range

Reference ranges for vitamin D can vary between different laboratories and may depend on factors like age, sex, and health conditions. Always discuss your specific results with your healthcare provider.

Clinical Reference

Quest: 1759
LabCorp: 006510
CPT: 86706
ICD-10: B18.1, Z22.51, Z11.59

Medicare covers for hepatitis B evaluation

Educational purposes only — This information is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your lab results with your healthcare provider.