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Cardio IQ Vitamin D, 25-Hydroxy
Quest Diagnostics1 test optionFrom $49.29
Cardio IQ Vitamin D, 25-Hydroxy
Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
DetailsQuestAssureD™ 25-Hydroxyvitamin D Test – This test measures the levels of Vitamin D in the body, which is crucial for bone health. It checks for Vitamin D activity, except in cases of renal disease. Low levels might indicate a dietary deficiency, poor absorption, or liver issues, leading to bone diseases like rickets and osteomalacia. High levels could cause hypercalcemia. The test specifically measures the two common forms of Vitamin D: 25-OH D3 and 25-OH D2.
What patients is this test right for?This test is suitable for individuals showing symptoms of Vitamin D deficiency or those at risk of bone diseases.
Symptoms of Vitamin D Deficiency:• Bone pain and weakness
• Muscle weakness
• Mood changes, like depression
• Severe fatigue
What type of sample is required for this test?0.5 mL serum. A simple blood draw is needed.
Test Resources https://education.questdiagnostics.com/faq/FAQ199
Additional test information
This test measures the levels of Vitamin D in the body, which is crucial for bone health. It checks for Vitamin D activity, except in cases of renal disease.
Collection and processing
- Sample type: Serum
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
DetailsQuestAssureD™ 25-Hydroxyvitamin D Test - This test measures the levels of Vitamin D in the body, which is crucial for bone health. It checks for Vitamin D activity, except in cases of renal disease. Low levels might indicate a dietary deficiency, poor absorption, or liver issues, leading to bone diseases like rickets and osteomalacia. High levels could cause hypercalcemia. The test specifically measures the two common forms of Vitamin D: 25-OH D3 and 25-OH D2.
What patients is this test right for?This test is suitable for individuals showing symptoms of Vitamin D deficiency or those at risk of bone diseases.
Symptoms of Vitamin D Deficiency:• Bone pain and weakness
• Muscle weakness
• Mood changes, like depression
• Severe fatigue
What type of sample is required for this test?0.5 mL serum. A simple blood draw is needed.
Test Resources https://education.questdiagnostics.com/faq/FAQ199
Additional details
This test measures the levels of Vitamin D in the body, which is crucial for bone health. It checks for Vitamin D activity, except in cases of renal disease.
Highlighted health areas
- Bone/Joint
- Immune System
- Nutrition
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- Vitamin D, 25-OH, Total
- 25-OH Hydroxy Vitamin D (Cholecalciferol D3)
- 25-OH Hydroxy Vitamin D (Ergocalciferol D2)