YY/T 1585-2024
NY/T 3879-2021
Determination of 25-Hydroxy Vitamin D, in feeds
DB15/T 2796-2022
YY/T 1585-2017
Total 25-hydroxyl vitamin D testing kit(labelling immunoassay)
WS/T 478-2024
WS/T 478-2015
Operating guidelines for measurement of serum 25-hydroxyvitamin D3—Isotope dilution liquid chromatography tandem mass spectrometry
T/CASMES 72-2022
T/CAGR 007-2022