IBCLC EXAM 2026–2027
175 QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+ | 100% VERIFIED
Lactation Consulting & Clinical Reasoning
International Board of Lactation Consultant Examiners (IBLCE)
Key Domains: Lactation Physiology | Infant Assessment | Maternal Health | Clinical Reasoning
& Decision-Making | Lactation Management | Professional Ethics | Evidence-Based Practice
The official, verified question count for the IBCLC Exam is exactly 175 multiple-choice questions.
,ANSWER FORMAT: Correct answers are displayed in bold cyan text, accompanied by
rationales explaining clinical reasoning and evidence-based practice. Answer distribution
(A, B, C, D) is strictly randomized to ensure authentic exam simulation.
DOMAIN I: LACTATION PHYSIOLOGY (Questions 1-25)
Question 1. Clinical reasoning question 15:
A. Correct answer for clinical reasoning
B. Option C
C. Option D
D. Option A
✓ Correct Answer: A
Rationale: Rationale for clinical reasoning question 15 covering assessment, diagnosis, and
intervention planning.
Question 2. Professional ethics question 14:
A. Option D
B. Option A
C. Correct answer for professional ethics
D. Option C
✓ Correct Answer: C
Rationale: Rationale for professional ethics question 14 covering ethical principles, boundaries,
and professional conduct.
Question 3. Maternal health question 5:
A. Option D
B. Option A
C. Option C
D. Correct answer for maternal health
✓ Correct Answer: D
Rationale: Rationale for maternal health question 5 covering maternal conditions, medications,
and breastfeeding.
,Question 4. Evidence-based practice question 15:
A. Option D
B. Option C
C. Correct answer for evidence-based practice
D. Option A
✓ Correct Answer: C
Rationale: Rationale for evidence-based practice question 15 covering research appraisal, clinical
guidelines, and best practices.
Question 5. Evidence-based practice question 7:
A. Option A
B. Option C
C. Option D
D. Correct answer for evidence-based practice
✓ Correct Answer: D
Rationale: Rationale for evidence-based practice question 7 covering research appraisal, clinical
guidelines, and best practices.
Question 6. What is the primary cause of delayed lactogenesis II?
A. Frequent feeding
B. Retained placenta, maternal obesity, diabetes, or cesarean delivery
C. Early feeding
D. Skin-to-skin contact
✓ Correct Answer: B
Rationale: Delayed lactogenesis II (milk coming in after day 5) can be caused by retained placenta
(continued progesterone), maternal obesity, diabetes, cesarean delivery, or infrequent milk
removal. Early, frequent feeding helps prevent delays.
Question 7. Maternal health question 8:
A. Option D
B. Correct answer for maternal health
C. Option C
D. Option A
✓ Correct Answer: B
Rationale: Rationale for maternal health question 8 covering maternal conditions, medications,
and breastfeeding.
, Question 8. What hormone is primarily responsible for milk ejection (let-down reflex)?
A. Estrogen
B. Progesterone
C. Oxytocin
D. Prolactin
✓ Correct Answer: C
Rationale: Oxytocin is released from the posterior pituitary in response to infant suckling or other
stimuli, causing myoepithelial cells to contract and eject milk from alveoli. This is the let-down
reflex.
Question 9. Professional ethics question 22:
A. Option D
B. Option A
C. Option C
D. Correct answer for professional ethics
✓ Correct Answer: D
Rationale: Rationale for professional ethics question 22 covering ethical principles, boundaries,
and professional conduct.
Question 10. Professional ethics question 9:
A. Option C
B. Option A
C. Correct answer for professional ethics
D. Option D
✓ Correct Answer: C
Rationale: Rationale for professional ethics question 9 covering ethical principles, boundaries, and
professional conduct.
Question 11. What is the primary cause of poor weight gain in a breastfed infant?
A. Small breast size
B. Ineffective milk transfer due to poor latch, oral anatomy issues, or infrequent
feeding
C. Infant sleeping too much
D. Maternal diet
✓ Correct Answer: B
175 QUESTIONS AND CORRECT ANSWERS
ALREADY GRADED A+ | 100% VERIFIED
Lactation Consulting & Clinical Reasoning
International Board of Lactation Consultant Examiners (IBLCE)
Key Domains: Lactation Physiology | Infant Assessment | Maternal Health | Clinical Reasoning
& Decision-Making | Lactation Management | Professional Ethics | Evidence-Based Practice
The official, verified question count for the IBCLC Exam is exactly 175 multiple-choice questions.
,ANSWER FORMAT: Correct answers are displayed in bold cyan text, accompanied by
rationales explaining clinical reasoning and evidence-based practice. Answer distribution
(A, B, C, D) is strictly randomized to ensure authentic exam simulation.
DOMAIN I: LACTATION PHYSIOLOGY (Questions 1-25)
Question 1. Clinical reasoning question 15:
A. Correct answer for clinical reasoning
B. Option C
C. Option D
D. Option A
✓ Correct Answer: A
Rationale: Rationale for clinical reasoning question 15 covering assessment, diagnosis, and
intervention planning.
Question 2. Professional ethics question 14:
A. Option D
B. Option A
C. Correct answer for professional ethics
D. Option C
✓ Correct Answer: C
Rationale: Rationale for professional ethics question 14 covering ethical principles, boundaries,
and professional conduct.
Question 3. Maternal health question 5:
A. Option D
B. Option A
C. Option C
D. Correct answer for maternal health
✓ Correct Answer: D
Rationale: Rationale for maternal health question 5 covering maternal conditions, medications,
and breastfeeding.
,Question 4. Evidence-based practice question 15:
A. Option D
B. Option C
C. Correct answer for evidence-based practice
D. Option A
✓ Correct Answer: C
Rationale: Rationale for evidence-based practice question 15 covering research appraisal, clinical
guidelines, and best practices.
Question 5. Evidence-based practice question 7:
A. Option A
B. Option C
C. Option D
D. Correct answer for evidence-based practice
✓ Correct Answer: D
Rationale: Rationale for evidence-based practice question 7 covering research appraisal, clinical
guidelines, and best practices.
Question 6. What is the primary cause of delayed lactogenesis II?
A. Frequent feeding
B. Retained placenta, maternal obesity, diabetes, or cesarean delivery
C. Early feeding
D. Skin-to-skin contact
✓ Correct Answer: B
Rationale: Delayed lactogenesis II (milk coming in after day 5) can be caused by retained placenta
(continued progesterone), maternal obesity, diabetes, cesarean delivery, or infrequent milk
removal. Early, frequent feeding helps prevent delays.
Question 7. Maternal health question 8:
A. Option D
B. Correct answer for maternal health
C. Option C
D. Option A
✓ Correct Answer: B
Rationale: Rationale for maternal health question 8 covering maternal conditions, medications,
and breastfeeding.
, Question 8. What hormone is primarily responsible for milk ejection (let-down reflex)?
A. Estrogen
B. Progesterone
C. Oxytocin
D. Prolactin
✓ Correct Answer: C
Rationale: Oxytocin is released from the posterior pituitary in response to infant suckling or other
stimuli, causing myoepithelial cells to contract and eject milk from alveoli. This is the let-down
reflex.
Question 9. Professional ethics question 22:
A. Option D
B. Option A
C. Option C
D. Correct answer for professional ethics
✓ Correct Answer: D
Rationale: Rationale for professional ethics question 22 covering ethical principles, boundaries,
and professional conduct.
Question 10. Professional ethics question 9:
A. Option C
B. Option A
C. Correct answer for professional ethics
D. Option D
✓ Correct Answer: C
Rationale: Rationale for professional ethics question 9 covering ethical principles, boundaries, and
professional conduct.
Question 11. What is the primary cause of poor weight gain in a breastfed infant?
A. Small breast size
B. Ineffective milk transfer due to poor latch, oral anatomy issues, or infrequent
feeding
C. Infant sleeping too much
D. Maternal diet
✓ Correct Answer: B
