Nephrology Comprehensive Exam 2026/2027 | KDIGO & ABIM–ESENeph
Blueprint | Complete Study Guide & Detailed Answer Explanations | Nephrology
Board Exam Preparation
PROFESSIONAL NEPHROLOGY EXAM REVIEW
2026/2027 EDITION
NEPHROLOGY COMPREHENSIVE EXAM
120 Original Questions • Answers • Evidence-Based Rationales
,OVERVIEW
This comprehensive practice resource reviews core nephrology knowledge for advanced learners. Questions
are original educational items and are not official, recalled, leaked, or reproduced examination questions.
CORE CONTENT AREAS
Chronic Kidney Disease & Risk Assessment — 30 Questions
Acute Kidney Injury & ICU Nephrology — 18 Questions
Glomerular & Vascular Disorders — 14 Questions
Hypertension in Kidney Disease — 12 Questions
Kidney Transplantation — 12 Questions
Acid-Base & Potassium Disorders — 11 Questions
Sodium & Water Disorders — 8 Questions
Pharmacology & Drug Stewardship in Kidney Disease — 6 Questions
Mineral-Bone, Stones & Tubulointerstitial/Cystic Disorders — 9 Questions
CURRENT-SOURCE NOTE
KDIGO currently identifies the 2024 CKD guideline as the current global standard while a focused update is
underway. The 2026 AKI/AKD document was a public-review draft, so it is explicitly treated as a draft rather
than a finalized guideline.
,Chronic Kidney Disease & Risk Assessment (30 QUESTIONS)
Question 1. CKD is best classified using which combination?
A. Cause, GFR category, and albuminuria category.
B. Serum creatinine alone.
C. Urine color and daily weight.
D. Blood pressure category alone.
Correct Answer: A. Cause, GFR category, and albuminuria category.
Rationale: This is the best answer because it follows the core nephrology principle being tested and
prioritizes accurate assessment, risk reduction, patient safety, and appropriate escalation. The other options
are less appropriate because they omit an important clinical consideration or apply an overly broad rule.
Distractor Analysis: A. Correct—best supported by the clinical principle tested. B. Incorrect—does not best
address the clinical issue or applies an inappropriate generalization. C. Incorrect—does not best address the
clinical issue or applies an inappropriate generalization. D. Incorrect—does not best address the clinical
issue or applies an inappropriate generalization.
Source Basis: KDIGO 2024 CKD Evaluation and Management Guideline; KDIGO 2026 focused CKD update
scope.
Question 2. Which urine test is preferred for quantifying albuminuria in CKD risk assessment?
A. 24-hour urine color score.
B. Urine pH alone.
C. Urine albumin-to-creatinine ratio.
D. Urine specific gravity alone.
Correct Answer: C. Urine albumin-to-creatinine ratio.
Rationale: This is the best answer because it follows the core nephrology principle being tested and
prioritizes accurate assessment, risk reduction, patient safety, and appropriate escalation. The other options
are less appropriate because they omit an important clinical consideration or apply an overly broad rule.
Distractor Analysis: A. Incorrect—does not best address the clinical issue or applies an inappropriate
generalization. B. Incorrect—does not best address the clinical issue or applies an inappropriate
generalization. C. Correct—best supported by the clinical principle tested. D. Incorrect—does not best
address the clinical issue or applies an inappropriate generalization.
Source Basis: KDIGO 2024 CKD Evaluation and Management Guideline; KDIGO 2026 focused CKD update
scope.
Question 3. A patient with CKD asks why albuminuria matters. Which explanation is best?
A. Higher albuminuria is associated with greater kidney and cardiovascular risk.
, B. Albuminuria has no prognostic value.
C. Albuminuria is only relevant in acute kidney injury.
D. Albuminuria determines blood type.
Correct Answer: A. Higher albuminuria is associated with greater kidney and cardiovascular risk.
Rationale: This is the best answer because it follows the core nephrology principle being tested and
prioritizes accurate assessment, risk reduction, patient safety, and appropriate escalation. The other options
are less appropriate because they omit an important clinical consideration or apply an overly broad rule.
Distractor Analysis: A. Correct—best supported by the clinical principle tested. B. Incorrect—does not best
address the clinical issue or applies an inappropriate generalization. C. Incorrect—does not best address the
clinical issue or applies an inappropriate generalization. D. Incorrect—does not best address the clinical
issue or applies an inappropriate generalization.
Source Basis: KDIGO 2024 CKD Evaluation and Management Guideline; KDIGO 2026 focused CKD update
scope.
Question 4. Which medication class can reduce intraglomerular pressure and albuminuria in
appropriate CKD patients?
A. Antihistamines.
B. Topical emollients.
C. Renin-angiotensin system blockade.
D. Short-acting antacids.
Correct Answer: C. Renin-angiotensin system blockade.
Rationale: This is the best answer because it follows the core nephrology principle being tested and
prioritizes accurate assessment, risk reduction, patient safety, and appropriate escalation. The other options
are less appropriate because they omit an important clinical consideration or apply an overly broad rule.
Distractor Analysis: A. Incorrect—does not best address the clinical issue or applies an inappropriate
generalization. B. Incorrect—does not best address the clinical issue or applies an inappropriate
generalization. C. Correct—best supported by the clinical principle tested. D. Incorrect—does not best
address the clinical issue or applies an inappropriate generalization.
Source Basis: KDIGO 2024 CKD Evaluation and Management Guideline; KDIGO 2026 focused CKD update
scope.
Question 5. After starting an ACE inhibitor, which laboratory change requires particular attention?
A. Serum creatinine and potassium.
B. Hemoglobin A1c only.
C. Serum sodium only.
Blueprint | Complete Study Guide & Detailed Answer Explanations | Nephrology
Board Exam Preparation
PROFESSIONAL NEPHROLOGY EXAM REVIEW
2026/2027 EDITION
NEPHROLOGY COMPREHENSIVE EXAM
120 Original Questions • Answers • Evidence-Based Rationales
,OVERVIEW
This comprehensive practice resource reviews core nephrology knowledge for advanced learners. Questions
are original educational items and are not official, recalled, leaked, or reproduced examination questions.
CORE CONTENT AREAS
Chronic Kidney Disease & Risk Assessment — 30 Questions
Acute Kidney Injury & ICU Nephrology — 18 Questions
Glomerular & Vascular Disorders — 14 Questions
Hypertension in Kidney Disease — 12 Questions
Kidney Transplantation — 12 Questions
Acid-Base & Potassium Disorders — 11 Questions
Sodium & Water Disorders — 8 Questions
Pharmacology & Drug Stewardship in Kidney Disease — 6 Questions
Mineral-Bone, Stones & Tubulointerstitial/Cystic Disorders — 9 Questions
CURRENT-SOURCE NOTE
KDIGO currently identifies the 2024 CKD guideline as the current global standard while a focused update is
underway. The 2026 AKI/AKD document was a public-review draft, so it is explicitly treated as a draft rather
than a finalized guideline.
,Chronic Kidney Disease & Risk Assessment (30 QUESTIONS)
Question 1. CKD is best classified using which combination?
A. Cause, GFR category, and albuminuria category.
B. Serum creatinine alone.
C. Urine color and daily weight.
D. Blood pressure category alone.
Correct Answer: A. Cause, GFR category, and albuminuria category.
Rationale: This is the best answer because it follows the core nephrology principle being tested and
prioritizes accurate assessment, risk reduction, patient safety, and appropriate escalation. The other options
are less appropriate because they omit an important clinical consideration or apply an overly broad rule.
Distractor Analysis: A. Correct—best supported by the clinical principle tested. B. Incorrect—does not best
address the clinical issue or applies an inappropriate generalization. C. Incorrect—does not best address the
clinical issue or applies an inappropriate generalization. D. Incorrect—does not best address the clinical
issue or applies an inappropriate generalization.
Source Basis: KDIGO 2024 CKD Evaluation and Management Guideline; KDIGO 2026 focused CKD update
scope.
Question 2. Which urine test is preferred for quantifying albuminuria in CKD risk assessment?
A. 24-hour urine color score.
B. Urine pH alone.
C. Urine albumin-to-creatinine ratio.
D. Urine specific gravity alone.
Correct Answer: C. Urine albumin-to-creatinine ratio.
Rationale: This is the best answer because it follows the core nephrology principle being tested and
prioritizes accurate assessment, risk reduction, patient safety, and appropriate escalation. The other options
are less appropriate because they omit an important clinical consideration or apply an overly broad rule.
Distractor Analysis: A. Incorrect—does not best address the clinical issue or applies an inappropriate
generalization. B. Incorrect—does not best address the clinical issue or applies an inappropriate
generalization. C. Correct—best supported by the clinical principle tested. D. Incorrect—does not best
address the clinical issue or applies an inappropriate generalization.
Source Basis: KDIGO 2024 CKD Evaluation and Management Guideline; KDIGO 2026 focused CKD update
scope.
Question 3. A patient with CKD asks why albuminuria matters. Which explanation is best?
A. Higher albuminuria is associated with greater kidney and cardiovascular risk.
, B. Albuminuria has no prognostic value.
C. Albuminuria is only relevant in acute kidney injury.
D. Albuminuria determines blood type.
Correct Answer: A. Higher albuminuria is associated with greater kidney and cardiovascular risk.
Rationale: This is the best answer because it follows the core nephrology principle being tested and
prioritizes accurate assessment, risk reduction, patient safety, and appropriate escalation. The other options
are less appropriate because they omit an important clinical consideration or apply an overly broad rule.
Distractor Analysis: A. Correct—best supported by the clinical principle tested. B. Incorrect—does not best
address the clinical issue or applies an inappropriate generalization. C. Incorrect—does not best address the
clinical issue or applies an inappropriate generalization. D. Incorrect—does not best address the clinical
issue or applies an inappropriate generalization.
Source Basis: KDIGO 2024 CKD Evaluation and Management Guideline; KDIGO 2026 focused CKD update
scope.
Question 4. Which medication class can reduce intraglomerular pressure and albuminuria in
appropriate CKD patients?
A. Antihistamines.
B. Topical emollients.
C. Renin-angiotensin system blockade.
D. Short-acting antacids.
Correct Answer: C. Renin-angiotensin system blockade.
Rationale: This is the best answer because it follows the core nephrology principle being tested and
prioritizes accurate assessment, risk reduction, patient safety, and appropriate escalation. The other options
are less appropriate because they omit an important clinical consideration or apply an overly broad rule.
Distractor Analysis: A. Incorrect—does not best address the clinical issue or applies an inappropriate
generalization. B. Incorrect—does not best address the clinical issue or applies an inappropriate
generalization. C. Correct—best supported by the clinical principle tested. D. Incorrect—does not best
address the clinical issue or applies an inappropriate generalization.
Source Basis: KDIGO 2024 CKD Evaluation and Management Guideline; KDIGO 2026 focused CKD update
scope.
Question 5. After starting an ACE inhibitor, which laboratory change requires particular attention?
A. Serum creatinine and potassium.
B. Hemoglobin A1c only.
C. Serum sodium only.
