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  1. If you take too much supplemental or prescription vitamin D, it can lead to vitamin D toxicity. The main complication of this is moderate to severe hypercalcemia, which can cause symptoms like vomiting, increased thirst and frequent urination.
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    Symptoms and Causes

    What are the symptoms of vitamin D toxicity?
    The symptoms of vitamin D toxicity are mainly due to hypercalcemia. They include: Decreas… 展开

    Cleveland Clinic
    Diagnosis and Tests

    How is vitamin D toxicity diagnosed?
    Healthcare providers rely on the following to … 展开

    Cleveland Clinic
    Management and Treatment

    How is vitamin D toxicity treated?
    Treatment for vitamin D toxicity mainly involves lowering the level of calcium in your blood. To do this, a healthcare provider will: Have you sto… 展开

    Cleveland Clinic
    Prevention

    How can I prevent vitamin D toxicity?
    There are some steps you can take to prevent vitamin D toxicity, including: Talk to your healthcare provider before starting a vitamin D supple… 展开

    Cleveland Clinic
    Outlook / Prognosis

    What is the prognosis for vitamin D toxicity?
    The prognosis (outlook) for vitamin D toxicity is generally good with treatment. In most cases, people recover without any serious complica… 展开

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    目录
    Symptoms and Causes
    Diagnosis and Tests
    Management and Treatment
    Prevention
    Outlook / Prognosis
     
  1. Hypervitaminosis D
    A higher-than-normal level may be due to excess vitamin D, a condition called hypervitaminosis D. This is most commonly caused by taking too much vitamin D. It can result in too much calcium in the blood (hypercalcemia). This leads to many symptoms and kidney damage.

    25-hydroxy vitamin D test - UCSF Health

    www.ucsfhealth.org/medical-tests/25-hydroxy-vitamin-d-test
    www.ucsfhealth.org/medical-tests/25-hydroxy-vitamin-d-test
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    What is a 25 hydroxy vitamin D test?
    Doctors use the 25-hydroxy vitamin D test to monitor your vitamin D levels. Low levels can mean you need to spend more time outdoors or adjust your diet. But it can also occur with certain medical conditions. Vitamin D helps your body absorb calcium and maintain strong bones throughout your entire life.

    25-Hydroxy Vitamin D Test: Purpose, Procedure, and Results - Healthline

    healthline.com
    What is 25 hydroxy vitamin D2 (ergocalciferol)?
    25 hydroxy vitamin D2 (ergocalciferol) is the vitamin D that you have absorbed from foods fortified with plant vitamin D or from an ergocalciferol supplement. The two vitamins (ergo- and cholecalciferol) work similarly in the body. The important value is the total 25 hydroxy vitamin D level in your blood.

    25-hydroxy vitamin D test Information | Mount Sinai - New York

    mountsinai.org
    What is vitamin D toxicity (hypervitaminosis D)?
    Vitamin D toxicity (hypervitaminosis D) happens when you have too much vitamin D in your body. It’s a rare complication that most often happens from taking higher-than-prescribed amounts of prescription vitamin D or too much of a self-prescribed over-the-counter (OTC) supplement.

    Vitamin D Toxicity: What It Is, Causes, Symptoms & Treatment

    my.clevelandclinic.org
    What is hypervitaminosis D?
    Hypervitaminosis D is a condition that occurs after taking very high doses of vitamin D. The cause is excess intake of vitamin D. The doses need to be very high, far above what most health care providers normally prescribe. There has been a lot of confusion about vitamin D supplementation.

    Hypervitaminosis D Information | Mount Sinai - New York

    mountsinai.org
    What is 25-hydroxyvitamin D2 & D3 (25-OH-vitd)?
    25-Hydroxyvitamin D2 and D3 (25-OH-VitD) are equipotent steroid hormones that require 1-alpha-hydroxylation before expressing biological activity. Vitamin D compounds are derived from dietary ergocalciferol (from plants, VitD2), cholecalciferol (from animals, VitD3), or by conversion of 7-dihydrocholesterol to VitD3 in the skin upon UV exposure.

    25-Hydroxyvitamin D2 and D3, Serum - Mayo Clinic Laboratories

    endocrinology.testcatalog.org
    What is 25 hydroxylated vitamin D?
    VitD2 and VitD3 are subsequently 25-hydroxylated in the liver to 25-OH-VitD. 25-OH-VitD represents the main body reservoir and transport form of vitamin D, being stored in adipose tissue and tightly bound by a transport protein while in circulation.

    25-Hydroxyvitamin D2 and D3, Serum - Mayo Clinic Laboratories

    endocrinology.testcatalog.org
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  3. Healthline
    https://www.healthline.com › health

    25-Hydroxy Vitamin D Test: Purpose, Procedure, and …

    2024年6月7日 · The amount of 25-hydroxyvitamin D in your blood is a good indication of how much vitamin D your body has. The test can determine if your vitamin D levels are too high or too low.

  4. Mount Sinai Health System
    https://www.mountsinai.org › ... › hypervitaminosis-d

    Hypervitaminosis D Information | Mount Sinai - New York

  5. Medical News Today
    https://www.medicalnewstoday.com › …

    Hypervitaminosis D: Causes, symptoms, diagnosis, and …

    2023年7月11日 · Hypervitaminosis D is a rare but potentially serious condition. It occurs when you take in too much vitamin D. The main cause is taking high-dose vitamin D supplements.

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  6. Mount Sinai Health System
    https://www.mountsinai.org › health-lib…

    25-hydroxy vitamin D test Information | Mount Sinai

    25 hydroxy vitamin D2 (ergocalciferol) is the vitamin D that you have absorbed from foods fortified with plant vitamin D or from an ergocalciferol supplement. The two vitamins (ergo- and cholecalciferol) work similarly in the body. The …

  8. Mayo Clinic Laboratories
    https://endocrinology.testcatalog.org › show

    25-Hydroxyvitamin D2 and D3, Serum - Mayo Clinic Laboratories ...

  9. Mayo Clinic
    https://www.mayoclinic.org › ... › expert-answers › vitamin-d-toxicity

    Vitamin D toxicity: What if you get too much? - Mayo Clinic

  10. Medical News Today
    https://www.medicalnewstoday.com › articles

    What to expect from a 25-hydroxy vitamin D test - Medical News …

  11. MedlinePlus
    https://medlineplus.gov › ency › article

    25-hydroxy vitamin D test - MedlinePlus

  12. UCSF Health
    https://www.ucsfhealth.org › medical-tests

    25-hydroxy vitamin D test - UCSF Health