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.
A low hemoglobin concentration may result from reduced red blood cell volume (true anemia) and/or from an increased extracellular water volume (hemodilution). CKD indicates chronic kidney disease; EPO, erythropoietin; GFR, glomerular filtration rate; RAAS, renin–angiotensin–aldosterone system; RBC, red blood cell.
