Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Vertical dotted line marks 1-year survival. WRL indicates within reference limit (ie, ≤240 U/L [to convert to microkatals per liter, multiply by 0.0167]).
