Interpretation of Comprehensive Metabolic Panel with GFR

Analysis of Laboratory Values

The Kidney Disease: Improving Global Outcomes (KDIGO) guidelines recommend using the estimated glomerular filtration rate (eGFR) as the initial assessment of kidney function, with normal eGFR typically being >60 mL/min/1.73m², and values below this threshold may indicate chronic kidney disease 1, 2, 3
Blood Urea Nitrogen (BUN) and creatinine levels appear to be within normal limits, supporting normal kidney function, according to the American Heart Association, as published in Circulation 2, 4
Sodium, potassium, chloride, and bicarbonate (TCO2) values are within normal ranges, indicating normal electrolyte balance, as recommended by the American Heart Association, in the journal Hypertension 5, 6

The normal eGFR suggests that this patient does not have chronic kidney disease based on current KDIGO classification, with GFR being the best available index of kidney function, according to the Kidney Disease: Improving Global Outcomes (KDIGO) guidelines 1, 2, 8
The comprehensive metabolic panel results do not indicate any need for additional kidney function testing at this time, as stated by the Kidney Disease: Improving Global Outcomes (KDIGO) guidelines 1, 3

For routine monitoring of kidney function, continuing to use eGFRcr (creatinine-based estimated GFR) is appropriate as the initial test for evaluation of GFR, as recommended by the Kidney Disease: Improving Global Outcomes (KDIGO) guidelines 1, 2
Annual monitoring of kidney function with comprehensive metabolic panel is reasonable for preventive care, according to the American Heart Association, in the journal Hypertension 5, 6