Table 1. Laboratory values reflecting the patient's worsening renal function (AKI on CKD V upon admission).

AKI: acute kidney injury, CKD: chronic kidney disease, BUN: blood urea nitrogen, GFR: glomerular filtration rate

	Normal range	November 2022	June 2023	Late July 2023	Early August 2023	August 2023 (admission)
BUN	6-23 mg/dL	57 mg/dL	67 mg/dL	68 mg/dL	49 mg/dL	88 mg/dL
Creatinine	0.70-1.20 mg/dL	4.21 mg/dL	5.70 mg/dL	6.70 mg/dL	6.20 mg/dL	12.47 mg/dL
GFR	≥60 mL/minute/m2	16 mL/minute/m2	11 mL/minute/m2	9 mL/minute/m2	10 mL/minute/m2	4 mL/minute/m2
Serum bicarbonate	22-29 mmol/L	20 mmol/L	22 mmol/L	20 mmol/L	22 mmol/L	14 mmol/L