Vitamin D Test
Health Checkups
≈ ¥20-50
(≈ $3-7)
2 hr
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Description
Estimated cost for Vitamin D Test at general public hospitals in China is about ¥15-40, and at Grade 3A hospitals about ¥20-50, varying by hospital tier and region.
Main Uses
Vitamin D testing is primarily used to diagnose and monitor vitamin D deficiency or toxicity. It is applicable in scenarios where patients present with symptoms of bone pain, muscle weakness, or frequent infections, and in managing conditions like osteoporosis, rickets, and osteomalacia. Additionally, it is used to assess the effectiveness of vitamin D supplementation and to evaluate the risk of fractures in elderly patients.
Normal Range
The normal range for Vitamin D (25-hydroxyvitamin D) is typically between 30 to 100 ng/mL (nanograms per milliliter). However, some laboratories may use a slightly different range, such as 20-50 ng/mL. It's important to check the specific reference range provided by the testing laboratory.
Low Values - Possible Causes
Possible causes of low Vitamin D levels include: insufficient exposure to sunlight, inadequate dietary intake, malabsorption issues (such as celiac disease or inflammatory bowel disease), liver or kidney diseases that affect vitamin D metabolism, and certain medications (like anticonvulsants and glucocorticoids).
High Values - Possible Causes
Possible causes of high Vitamin D levels can be due to: excessive supplementation, overexposure to sunlight, granulomatous diseases (such as sarcoidosis or tuberculosis) which can increase the production of active vitamin D, and certain lymphomas. Rarely, it could also be due to consuming too much vitamin D through diet, although this is less common.