F2 and chronic kidney disease: BUN: blood urea nitrogen; Est GFR (CKD-EPI 2021): estimated glomerular filtration rate (Chronic Kidney Disease Epidemiology Collaboration 2021); AST: aspartate aminotransferase; ALT: alanine aminotransferase; Hgb: hemoglobin; Hct: hematocrit; MCV: mean corpuscular volume; MCH: mean corpuscular hemoglobin; MCHC: mean corpuscular hemoglobin concentration; RDW: red cell distribution width; Plt: platelet; PT: prothrombin time; INR: international normalized ratio