Diabetic CKD: Treatment Eligibility and Follow-up

Student Handouts and Nephrology Primer · Visual teaching summary · October 3, 2026

Andrew Bland, MD, FACP, FAAP

Visual summary

Use each drug’s eligibility and safety checks. Published KDIGO 2022/2024 guidance underpins this card; the KDIGO 2026 diabetes update remains a public-review draft.

Diabetic CKD: Treatment Eligibility and Follow-up. Full text follows below.
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Stage risk with TWO tests

Adult type 2 diabetes: measure eGFR and urine albumin:creatinine ratio (UACR). Persistent UACR ≥30 mg/g or eGFR <60 mL/min/1.73 m² for ≥3 months establishes CKD. A2 albuminuria is 30–300 mg/g; A3 is >300. Record BP, potassium, and volume status.

ACE inhibitor OR ARB

For diabetic CKD with A2–A3 albuminuria, use the highest tolerated approved dose; do not combine ACEi and ARB. Recheck BP, creatinine, and potassium in 2–4 weeks after starting or increasing. A creatinine rise >30% within 4 weeks triggers investigation for depletion, NSAIDs, or other AKI causes.

SGLT2 inhibitor: eGFR ≥20

In T2D with CKD, initiate an SGLT2 inhibitor with proven benefit at eGFR ≥20, even when HbA1c is at goal. An initial reversible eGFR dip usually does not require stopping. Hold during prolonged fasting, surgery, or critical illness; reassess dehydration and ketosis risk.

Finerenone: albuminuria + safe K⁺

For persistent albuminuria despite tolerated ACEi/ARB, select patients with normal potassium and eGFR ≥25. The U.S. label forbids initiation if K⁺ >5.0 mmol/L; 4.8–5.0 needs extra monitoring. Check K⁺/eGFR at 4 weeks and after dose changes, then approximately every 4 months. Hold if K⁺ >5.5; restart only when ≤5.0.

Glucose and weight still matter

Metformin is an option at eGFR ≥30; reduce dose below 45 and stop below 30. Add a long-acting GLP-1 receptor agonist with demonstrated benefit when individualized glycemic goals remain unmet or metformin/SGLT2 therapy cannot be used. Semaglutide also has kidney-outcome evidence in T2D with CKD; assess GI tolerance and intake.

Worked example: HbA1c is not the gate

Synthetic example: eGFR 42, UACR 500, K⁺ 4.6, HbA1c 6.8% on tolerated losartan. Kidney risk still supports SGLT2 therapy and finerenone assessment. Schedule the monitoring when prescribing. CONFIDENCE showed greater UACR reduction with combination treatment at 180 days; it did not establish fewer dialysis events.

Supporting evidence

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