Vitamin D is not only an essential fat-soluble vitamin but also is an important nutrient for human growth and health. The Human body can either obtain vitamin D from food intake (mainly egg yolk, fish oil, and plants), or from synthesis by skin exposed to sunlight. The main function of vitamin D is to help a body absorb calcium, maintain bone health, regulate gene expression and cell function; furthermore, it is also hormone precursors. Only the total amount of vitamin D can be detected in routine biochemical tests, so the amount of 25-Hydroxyvitamin D2/D3 (vitamin D2/D3) cannot be understood individually. This test provides two individual results using a high-performance liquid chromatography mass spectrometer , which can provide more accurate clinical reference for medical professionals.
After the liver metabolizes estrogen, the metabolites are classified into good and bad estrogens by their properties in the target tissues. By determining the distribution of healthy and risky estrogen metabolites, we can further understand the risk of breast, endometrial, ovarian, and prostate cancers.