GPT and chronic kidney disease: ALP: alkaline phosphatase; ALT: alanine transaminase; AST: aspartate aminotransferase; CO2: bicarbonate; eGFR CKD-EPI: estimated glomerular filtration rate (Chronic Kidney Disease Epidemiology Collaboration formula); HCT: hematocrit; MCH: mean corpuscular hemoglobin; MCHC: mean corpuscular hemoglobin concentration; MCV: mean corpuscular volume; MPV: mean platelet volume; TSH: thyroid-stimulating hormone.