An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Tobias DK, Clish C, Mora S, Li J, Liang L, Hu FB, Manson JE, Zhang C.Tobias DK, et al.Clin Chem. 2018 Aug;64(8):1203-1210. doi: 10.1373/clinchem.2017.285841. Epub 2018 Jun 26.Clin Chem. 2018.PMID: 29945965Free PMC article.