CLC (CERTIFIED LACTATION
COUNSELOR) EXAM PRACTICE
QUESTIONS 2026 UPDATED EDITION | 200
QUESTIONS WITH VERIFIED ANSWERS
AND DETAILED RATIONALES
INTRODUCTION
This comprehensive practice question bank has been developed to help candidates
prepare for the Certified Lactation Counselor (CLC) examination administered by
the Academy of Lactation Policy and Practice (ALPP). The CLC exam assesses
knowledge across the full spectrum of lactation care, including anatomy and
physiology, breastfeeding management, maternal and infant assessment, counseling
techniques, and ethical practice. Candidates must complete an ALPP-approved
training pathway and pass a 100-question remotely proctored exam with a required
score of 75% or higher.
These 200 questions reflect the current exam content standards for 2026, covering
all tested knowledge domains. Each question includes a correct answer with a
detailed rationale to reinforce understanding of key concepts. The questions are
designed to mirror the actual exam format and test both foundational knowledge
and clinical application skills.
Use this resource as part of a comprehensive study plan that includes review of
lactation physiology, breastfeeding management protocols, and counseling
strategies. Let's begin your preparation.
SECTION 1: BREASTFEEDING ANATOMY & PHYSIOLOGY
1. Which structure in the breast is responsible for producing milk?
• A) Lactiferous duct
, • B) Alveoli
• C) Nipple
• D) Areola
Answer: B
Rationale: The alveoli are small, grape-like clusters of cells in the breast that
synthesize and secrete milk. Milk then moves through the lactiferous ducts toward
the nipple. The nipple and areola play roles in milk ejection and infant latch but do
not produce milk.
2. Which hormone is primarily responsible for milk production after
childbirth?
• A) Estrogen
• B) Progesterone
• C) Prolactin
• D) Oxytocin
Answer: C
Rationale: Prolactin, produced by the anterior pituitary gland, stimulates the
alveolar cells in the breast to produce milk. Oxytocin is responsible for milk
ejection (let-down reflex), not production.
3. What is the function of myoepithelial cells in the breast?
• A) Produce milk
• B) Contract to expel milk
• C) Store milk
• D) Protect the breast from infection
,Answer: B
Rationale: Myoepithelial cells surround the alveoli and contract in response to
oxytocin, helping push milk through the ducts toward the nipple.
4. Which of the following changes occurs in the breast during pregnancy to
prepare for lactation?
• A) Decrease in ductal branching
• B) Shrinkage of alveoli
• C) Development of lobuloalveolar structures
• D) Reduction of blood supply
Answer: C
Rationale: During pregnancy, estrogen, progesterone, and prolactin stimulate the
growth of lobules and alveoli in preparation for milk production. Ducts branch
extensively, and vascular supply increases.
5. Which statement best describes colostrum?
• A) Produced in large volumes and low in antibodies
• B) Produced during late pregnancy and high in nutrients
• C) Produced in small volumes, rich in antibodies, and supports newborn
immunity
• D) Produced after 6 months of breastfeeding
Answer: C
Rationale: Colostrum is the first milk, secreted in the first 2-5 days postpartum. It
is thick, yellowish, highly concentrated in antibodies (especially IgA), and helps
protect the newborn from infections.
6. Which structure stores milk temporarily before it exits through the nipple?
, • A) Alveoli
• B) Lactiferous sinuses
• C) Lobules
• D) Montgomery glands
Answer: B
Rationale: Lactiferous sinuses are dilated portions of the milk ducts just beneath
the areola that store milk briefly before ejection.
7. What is the main function of the areola during breastfeeding?
• A) Store colostrum
• B) Help infant latch and stimulate milk ejection
• C) Prevent infection
• D) Produce milk
Answer: B
Rationale: The areola contains Montgomery glands, which secrete lubricating oils
and pheromones to help the infant latch properly and stimulate oxytocin release.
8. Which hormone increases during pregnancy and inhibits full milk
production until after delivery?
• A) Estrogen
• B) Oxytocin
• C) Progesterone
• D) Cortisol
Answer: C
Rationale: Progesterone rises during pregnancy, preparing breast tissue but
inhibiting copious milk production until after the placenta is delivered.
COUNSELOR) EXAM PRACTICE
QUESTIONS 2026 UPDATED EDITION | 200
QUESTIONS WITH VERIFIED ANSWERS
AND DETAILED RATIONALES
INTRODUCTION
This comprehensive practice question bank has been developed to help candidates
prepare for the Certified Lactation Counselor (CLC) examination administered by
the Academy of Lactation Policy and Practice (ALPP). The CLC exam assesses
knowledge across the full spectrum of lactation care, including anatomy and
physiology, breastfeeding management, maternal and infant assessment, counseling
techniques, and ethical practice. Candidates must complete an ALPP-approved
training pathway and pass a 100-question remotely proctored exam with a required
score of 75% or higher.
These 200 questions reflect the current exam content standards for 2026, covering
all tested knowledge domains. Each question includes a correct answer with a
detailed rationale to reinforce understanding of key concepts. The questions are
designed to mirror the actual exam format and test both foundational knowledge
and clinical application skills.
Use this resource as part of a comprehensive study plan that includes review of
lactation physiology, breastfeeding management protocols, and counseling
strategies. Let's begin your preparation.
SECTION 1: BREASTFEEDING ANATOMY & PHYSIOLOGY
1. Which structure in the breast is responsible for producing milk?
• A) Lactiferous duct
, • B) Alveoli
• C) Nipple
• D) Areola
Answer: B
Rationale: The alveoli are small, grape-like clusters of cells in the breast that
synthesize and secrete milk. Milk then moves through the lactiferous ducts toward
the nipple. The nipple and areola play roles in milk ejection and infant latch but do
not produce milk.
2. Which hormone is primarily responsible for milk production after
childbirth?
• A) Estrogen
• B) Progesterone
• C) Prolactin
• D) Oxytocin
Answer: C
Rationale: Prolactin, produced by the anterior pituitary gland, stimulates the
alveolar cells in the breast to produce milk. Oxytocin is responsible for milk
ejection (let-down reflex), not production.
3. What is the function of myoepithelial cells in the breast?
• A) Produce milk
• B) Contract to expel milk
• C) Store milk
• D) Protect the breast from infection
,Answer: B
Rationale: Myoepithelial cells surround the alveoli and contract in response to
oxytocin, helping push milk through the ducts toward the nipple.
4. Which of the following changes occurs in the breast during pregnancy to
prepare for lactation?
• A) Decrease in ductal branching
• B) Shrinkage of alveoli
• C) Development of lobuloalveolar structures
• D) Reduction of blood supply
Answer: C
Rationale: During pregnancy, estrogen, progesterone, and prolactin stimulate the
growth of lobules and alveoli in preparation for milk production. Ducts branch
extensively, and vascular supply increases.
5. Which statement best describes colostrum?
• A) Produced in large volumes and low in antibodies
• B) Produced during late pregnancy and high in nutrients
• C) Produced in small volumes, rich in antibodies, and supports newborn
immunity
• D) Produced after 6 months of breastfeeding
Answer: C
Rationale: Colostrum is the first milk, secreted in the first 2-5 days postpartum. It
is thick, yellowish, highly concentrated in antibodies (especially IgA), and helps
protect the newborn from infections.
6. Which structure stores milk temporarily before it exits through the nipple?
, • A) Alveoli
• B) Lactiferous sinuses
• C) Lobules
• D) Montgomery glands
Answer: B
Rationale: Lactiferous sinuses are dilated portions of the milk ducts just beneath
the areola that store milk briefly before ejection.
7. What is the main function of the areola during breastfeeding?
• A) Store colostrum
• B) Help infant latch and stimulate milk ejection
• C) Prevent infection
• D) Produce milk
Answer: B
Rationale: The areola contains Montgomery glands, which secrete lubricating oils
and pheromones to help the infant latch properly and stimulate oxytocin release.
8. Which hormone increases during pregnancy and inhibits full milk
production until after delivery?
• A) Estrogen
• B) Oxytocin
• C) Progesterone
• D) Cortisol
Answer: C
Rationale: Progesterone rises during pregnancy, preparing breast tissue but
inhibiting copious milk production until after the placenta is delivered.
