Vitamin D, 25-Hydroxy
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Vitamin D, 25-Hydroxy LC/MS/MS (Quest Diagnostics)
Same day lab order delivery
HSA/FSA reimbursable
Measurement of serum 25-OH vitamin D concentrations provide a good index of circulating vitamin D activity in patients not suffering from renal disease. Lower than normal 25-OH vitamin D levels can result from a dietary deficiency, poor absorption of the vitamin or impaired metabolism of the sterol in the liver. A 25-OH vitamin D deficiency can lead to bone diseases such as rickets and osteomalacia. Above normal levels can lead hypercalcemia. This assay employs liquid chromatography tandem mass spectrometry to independently measure and report the two common forms of 25-hydroxy vitamin D: 25OH D3 - the endogenous form of the vitamin and 25OH D2 - the analog form used to treat 25OH Vitamin D3 deficiency.
A significant deviation from the normal range may require further evaluation by your physician.
Alternative Names(s):
Vitamin D2, 25-hydroxy, 25-Hydroxyergocalciferol (25OHD2), Vitamin D3, 25-hydroxy, D2 Vitamin, 25-Hydroxyvitamin D3, 25-OH-D3, 25-Hydroxycholecalciferol (25OHD3), 25-OH-D2, D3 Vitamin, 25-Hydroxyvitamin D2
Vitamin D, 25-OH, D3;
Vitamin D, 25-OH, D2
Estimated turnaround for results is 5 business days. If confirmation testing is required, the estimated time may be extended.
Vitamin D, 25-Hydroxy (LabCorp)
Same day lab order delivery
HSA/FSA reimbursable
A significant deviation from the normal range may require further evaluation by your physician.
This test is also known by the following:
25-Hydroxycalciferol
25-OH-D
Cholecalciferol Metabolite
Vitamin D
Vitamin D3 Metabolite
Estimated turnaround for results is 3 business days. If confirmation testing is required, the estimated time may be extended.
FAQ
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What is a Vitamin D 25-hydroxy blood test?
A Vitamin D 25-hydroxy blood test evaluates the amount of an active form of vitamin D (Calcifediol) in your body. Vitamin D is a fat-soluble vitamin that plays an important role in building and maintaining strong bones by facilitating calcium absorption.
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What does a Vitamin D 25-hydroxy panel test for?
There are many different types of problems that can be diagnosed with a vitamin D 25-hydroxy test. These can include:
- Vitamin D deficiency
- Rickets and osteomalacia (bone weakness)
- Osteoporosis
- Skeletal muscle weakness
- Myopathy
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Why would a Vitamin D-25 hydroxy test be high? Why would it be low?
The Vitamin D-25 hydroxy test determines if there are sufficient levels of Vitamin D in the blood. High levels indicate that your body produces too much vitamin D, which could be a symptom of:
- Kidney disease
- Hyperparathyroidism
- Hypercalcemia
A Vitamin D-25 hydroxy test can be low due to:
- Lack of dietary Vitamin D
- Inadequate sunlight exposure
- Poor liver function
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Who should get this test?
It is recommended that you take a vitamin D 25-hydroxy blood test if you are experiencing any of the following symptoms:
- Fatigue or weakness
- Soft bones
- Muscle aches
- Pain
- Decreased appetite
- Low blood pressure
- Diarrhea or constipation
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What is the purpose of vitamin D 25-hydroxy testing?
Vitamin D 25-hydroxy testing is used to measure the vitamin D levels in the blood. Vitamin D is important for bone health and the immune system's proper functioning.
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Do I need to visit a doctor?
Nope. You don't need a doctor's visit to get a test with us.
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How do I get my results?
You'll get your results via email as soon as they are available. We will notify you via SMS as well. You can also see them at any time in the future right in your dashboard where you can easily share them with your professional and compare them side by side with future tests.
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Does my lab prescription expire?
We're the only lab that honors your lab order forever.