Vitamin D Hydroxy (25-OH) Testing and Deficiency

25-hydroxy vitamin D blood test is done to check the vitamin D level in our body.

This form of vitamin is converted into a more active form by the kidney. This active form is directly responsible for controlling calcium and phosphorus levels in the blood.

The normal range for vitamin D 25-OH in blood is 30.0 to 74.0 nanograms per milliliter (ng/ml).

Symptoms Suggesting Vitamin D Deficiency

  • Muscle pains in one or more muscle groups of the body. Pain may be in one muscle at some time and another muscle at some other time.
  • Joint pain
  • Weight gain
  • Headaches
  • Constipation or diarrhea
  • Poor concentration
  • Restlessness, during sleep
  • Fatigue in general

Causes of Low Vitamin D Levels

Vitamin D deficiency is very common these days. There can be many causes for this. They are:

  • Dietary deficiency of the vitamin
  • Lack of exposure to sunlight
  • Poor food absorption
  • Liver or kidney diseases
  • Certain medicines like, phenytoin, some barbiturates etc.

Medical Advice (Q&As) on “Hydroxy Vitamin D 25-OH Blood Test Levels and Deficiency Symptoms”

  1. Npra

    Sir,
    Age 8 years female. Often complaints about pain in toes (left) feels good while pressing the toes. What could be the reason? How to get rid of this pain?
    Thanks.

    Reply ↓
    1. Buddy M.D. Post author

      Is she having her daily glasses full of milk? This could be vitamin D deficiency. You may get her blood levels checked up and go for treatment.

      A daily supplement of calcium with Vitamin D may be started.

      Reply ↓

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