Abstract
In chronic kidney disease (CKD), referral to nephrology is based on Kidney Disease: Improving Global Outcomes 2012 guidelines and is generally indicated when the estimated glomerular filtration rate (eGFR) is <30 mL/min/1.73 m2 or when there is a rapid decline of eGFR, elevated urinary albumin:creatinine ratio (>300 mg/g) or other ‘alert’ signs such as the presence of urinary red blood cell casts. Since eGFR declines with ageing in otherwise healthy individuals, we propose that the eGFR threshold for nephrology referral should be adjusted according to age. According to current recommendations, young patients without rapidly progressing CKD are referred more often to nephrology when CKD is more severe, compared with age-matched controls with normal eGFRs, than elderly CKD patients. In this commentary, we discuss the age factor and other specific situations not considered in current guidelines for nephrology referral of CKD patients.
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