CLC CERTIFIED LACTATION COUNSELOR EXAM 2026 200
QUESTIONS CURRENTLY TESTING AND FREQUENTLY TESTED
EXAM QUESTIONS WITH VERIFIED ANSWERS AND RATIONALES
This comprehensive set of 200 unique, multiple-choice questions is specifically designed to
mirror the content and rigor of the CLC Certified Lactation Counselor exam administered
by the Academy of Lactation Policy and Practice (ALPP). Covering the entire spectrum of
the ALPP exam blueprint, these questions address lactation anatomy and physiology, the
three pillars of breastfeeding support (Promotion, Protection, and Support), the Baby-
Friendly Hospital Initiative and Ten Steps, the International Code of Marketing of Breast-
milk Substitutes, counseling techniques and learning styles, breastfeeding assessment and
management, maternal and infant conditions affecting lactation, pharmacology and
medication safety, and professional ethics. Each question is paired with a correct answer
and a detailed rationale that reinforces key concepts from the WHO/UNICEF
breastfeeding counseling training footprint, preparing candidates to pass the CLC exam
and provide competent, evidence-based lactation care.
1. What is the expected weight loss limit for a healthy, full-term newborn before
supplementation should be considered?
A) 5% of birth weight
B) 7% of birth weight
C) 10% of birth weight
D) 12% of birth weight
Answer: B
Rationale: A newborn should not lose more than 7% of their birth weight before day five. They
are expected to regain their birth weight by about 12–14 days of life. Losses exceeding 7% may
indicate ineffective feeding or low milk transfer and require assessment of lactation and infant
health .
2. What are the three pillars of breastfeeding support?
A) Education, Policy, and Health
B) Nutrition, Hygiene, and Bonding
C) Promotion, Protection, and Support
D) Medical, Social, and Emotional
Answer: C
,Rationale: Promotion focuses on advantages of breastfeeding on many levels; Protection
addresses government and commercial responsibility to assure breastfeeding competes fairly;
Support involves interventions to increase and sustain breastfeeding rates. These three pillars
form the foundation of the WHO/UNICEF Baby-Friendly Hospital Initiative .
3. The International Code of Marketing of Breast-milk Substitutes prohibits which practice?
A) Providing free formula samples to mothers
B) Advertising breast pumps
C) Selling formula in pharmacies
D) Distributing educational breastfeeding materials
Answer: A
Rationale: The International Code prohibits distributing free or low-cost formula to mothers,
giving coupons, and providing gifts to healthcare workers. It is designed to protect breastfeeding
from commercial pressures. In the U.S., it is not law, but many Baby-Friendly hospitals align
policies with it .
4. Which hormone is primarily responsible for stimulating milk synthesis in the breast?
A) Estrogen
B) Progesterone
C) Prolactin
D) Oxytocin
Answer: C
Rationale: Prolactin is the primary hormone responsible for milk synthesis (lactogenesis). It is
released from the anterior pituitary in response to nipple stimulation and milk removal. Frequent
nursing in the early days increases prolactin receptor sites, supporting long-term supply .
5. Which hormone is responsible for the milk ejection reflex (let-down)?
A) Prolactin
B) Estrogen
C) Progesterone
D) Oxytocin
Answer: D
Rationale: Oxytocin triggers the let-down reflex by causing myoepithelial cells surrounding the
alveoli to contract, squeezing milk into the ducts. Oxytocin release is stimulated by nipple
stretching, baby cues, and conditioned responses. Stress can inhibit oxytocin .
6. What is the composition of human milk in terms of macronutrients?
A) Highest in protein and fat
B) Highest in water and lactose
C) Equal parts water, fat, and protein
D) Highest in fat and minerals
Answer: B
,Rationale: Human milk is highest in water (about 87%) and lactose (about 7%), with relatively
low protein and moderate fat compared to other mammals. This composition supports rapid brain
development, hydration, and easy digestion .
7. Which immune factor in breast milk provides specific immunity against many organisms?
A) Lactoferrin
B) Macrophages
C) Oligosaccharides
D) Secretory IgA
Answer: D
Rationale: Secretory IgA (sIgA) provides specific immunity by coating the infant's
gastrointestinal tract and preventing pathogens from attaching. It is the most abundant
immunoglobulin in breast milk and is particularly important in the first months of life .
8. Engorgement in the early postpartum period is most often caused by what factor?
A) High oxytocin levels
B) High prolactin levels
C) Infrequent or ineffective feedings
D) Postpartum depression
Answer: C
Rationale: Severe engorgement is most often caused by infrequent or ineffective feedings,
leading to milk stasis and vascular congestion. Treatment includes frequent feeding, gentle hand
expression or pumping to soften the areola, and cold compresses after feeding .
9. What is the most common cause of sore nipples in the early days of breastfeeding?
A) Baby's strong suck
B) Feeding too long
C) Lack of nipple preparation during pregnancy
D) Poor attachment (latch)
Answer: D
Rationale: The most common cause of sore nipples is poor latch or attachment, which leads to
friction and trauma. Proper positioning and deep latch—where the baby takes a large mouthful of
breast tissue—are essential. Nipple preparation during pregnancy is not necessary .
10. What is the most important criterion for assessing effective milk transfer during a feeding?
A) Visible areola compression
B) Proper alignment
C) Proper attachment
D) Audible swallowing
Answer: D
, Rationale: Audible swallowing is the most reliable sign of active milk transfer. While proper
attachment and alignment are important for effective feeding, audible swallows indicate the baby
is actually receiving milk .
11. What are the three strategies for increasing breastfeeding initiation and duration?
A) Education, Training, and Support
B) Protection, Promotion, and Support
C) Policy, Practice, and Counseling
D) Information, Resources, and Follow-up
Answer: B
Rationale: Promotion focuses on communicating breastfeeding advantages; Protection involves
legislation and policy to enable breastfeeding; Support provides interpersonal assistance and
community programs. The WHO/UNICEF Baby-Friendly Hospital Initiative incorporates all
three .
12. The Baby-Friendly Hospital Initiative (BFHI) was established by which organizations?
A) AAP and CDC
B) UNICEF and WHO
C) ALPP and IBLCE
D) FDA and NIH
Answer: B
Rationale: The BFHI was launched in 1991 by WHO and UNICEF to implement practices that
protect, promote, and support breastfeeding. It is based on the Ten Steps to Successful
Breastfeeding .
13. According to the Ten Steps, how soon after birth should a healthy newborn be placed skin-to-
skin with mother?
A) Within 1 hour
B) Within 2 hours
C) Within 4 hours
D) Within 6 hours
Answer: A
Rationale: The Ten Steps require helping all mothers initiate breastfeeding within one hour of
birth. Skin-to-skin contact immediately after birth promotes attachment, breastfeeding initiation,
and temperature regulation .
14. What is "green" or shiny stool in a breastfed newborn a sign of?
A) Gastrointestinal infection
B) Overproduction of milk with lower fat content
C) Protein allergy
D) Delayed meconium passage
Answer: B
QUESTIONS CURRENTLY TESTING AND FREQUENTLY TESTED
EXAM QUESTIONS WITH VERIFIED ANSWERS AND RATIONALES
This comprehensive set of 200 unique, multiple-choice questions is specifically designed to
mirror the content and rigor of the CLC Certified Lactation Counselor exam administered
by the Academy of Lactation Policy and Practice (ALPP). Covering the entire spectrum of
the ALPP exam blueprint, these questions address lactation anatomy and physiology, the
three pillars of breastfeeding support (Promotion, Protection, and Support), the Baby-
Friendly Hospital Initiative and Ten Steps, the International Code of Marketing of Breast-
milk Substitutes, counseling techniques and learning styles, breastfeeding assessment and
management, maternal and infant conditions affecting lactation, pharmacology and
medication safety, and professional ethics. Each question is paired with a correct answer
and a detailed rationale that reinforces key concepts from the WHO/UNICEF
breastfeeding counseling training footprint, preparing candidates to pass the CLC exam
and provide competent, evidence-based lactation care.
1. What is the expected weight loss limit for a healthy, full-term newborn before
supplementation should be considered?
A) 5% of birth weight
B) 7% of birth weight
C) 10% of birth weight
D) 12% of birth weight
Answer: B
Rationale: A newborn should not lose more than 7% of their birth weight before day five. They
are expected to regain their birth weight by about 12–14 days of life. Losses exceeding 7% may
indicate ineffective feeding or low milk transfer and require assessment of lactation and infant
health .
2. What are the three pillars of breastfeeding support?
A) Education, Policy, and Health
B) Nutrition, Hygiene, and Bonding
C) Promotion, Protection, and Support
D) Medical, Social, and Emotional
Answer: C
,Rationale: Promotion focuses on advantages of breastfeeding on many levels; Protection
addresses government and commercial responsibility to assure breastfeeding competes fairly;
Support involves interventions to increase and sustain breastfeeding rates. These three pillars
form the foundation of the WHO/UNICEF Baby-Friendly Hospital Initiative .
3. The International Code of Marketing of Breast-milk Substitutes prohibits which practice?
A) Providing free formula samples to mothers
B) Advertising breast pumps
C) Selling formula in pharmacies
D) Distributing educational breastfeeding materials
Answer: A
Rationale: The International Code prohibits distributing free or low-cost formula to mothers,
giving coupons, and providing gifts to healthcare workers. It is designed to protect breastfeeding
from commercial pressures. In the U.S., it is not law, but many Baby-Friendly hospitals align
policies with it .
4. Which hormone is primarily responsible for stimulating milk synthesis in the breast?
A) Estrogen
B) Progesterone
C) Prolactin
D) Oxytocin
Answer: C
Rationale: Prolactin is the primary hormone responsible for milk synthesis (lactogenesis). It is
released from the anterior pituitary in response to nipple stimulation and milk removal. Frequent
nursing in the early days increases prolactin receptor sites, supporting long-term supply .
5. Which hormone is responsible for the milk ejection reflex (let-down)?
A) Prolactin
B) Estrogen
C) Progesterone
D) Oxytocin
Answer: D
Rationale: Oxytocin triggers the let-down reflex by causing myoepithelial cells surrounding the
alveoli to contract, squeezing milk into the ducts. Oxytocin release is stimulated by nipple
stretching, baby cues, and conditioned responses. Stress can inhibit oxytocin .
6. What is the composition of human milk in terms of macronutrients?
A) Highest in protein and fat
B) Highest in water and lactose
C) Equal parts water, fat, and protein
D) Highest in fat and minerals
Answer: B
,Rationale: Human milk is highest in water (about 87%) and lactose (about 7%), with relatively
low protein and moderate fat compared to other mammals. This composition supports rapid brain
development, hydration, and easy digestion .
7. Which immune factor in breast milk provides specific immunity against many organisms?
A) Lactoferrin
B) Macrophages
C) Oligosaccharides
D) Secretory IgA
Answer: D
Rationale: Secretory IgA (sIgA) provides specific immunity by coating the infant's
gastrointestinal tract and preventing pathogens from attaching. It is the most abundant
immunoglobulin in breast milk and is particularly important in the first months of life .
8. Engorgement in the early postpartum period is most often caused by what factor?
A) High oxytocin levels
B) High prolactin levels
C) Infrequent or ineffective feedings
D) Postpartum depression
Answer: C
Rationale: Severe engorgement is most often caused by infrequent or ineffective feedings,
leading to milk stasis and vascular congestion. Treatment includes frequent feeding, gentle hand
expression or pumping to soften the areola, and cold compresses after feeding .
9. What is the most common cause of sore nipples in the early days of breastfeeding?
A) Baby's strong suck
B) Feeding too long
C) Lack of nipple preparation during pregnancy
D) Poor attachment (latch)
Answer: D
Rationale: The most common cause of sore nipples is poor latch or attachment, which leads to
friction and trauma. Proper positioning and deep latch—where the baby takes a large mouthful of
breast tissue—are essential. Nipple preparation during pregnancy is not necessary .
10. What is the most important criterion for assessing effective milk transfer during a feeding?
A) Visible areola compression
B) Proper alignment
C) Proper attachment
D) Audible swallowing
Answer: D
, Rationale: Audible swallowing is the most reliable sign of active milk transfer. While proper
attachment and alignment are important for effective feeding, audible swallows indicate the baby
is actually receiving milk .
11. What are the three strategies for increasing breastfeeding initiation and duration?
A) Education, Training, and Support
B) Protection, Promotion, and Support
C) Policy, Practice, and Counseling
D) Information, Resources, and Follow-up
Answer: B
Rationale: Promotion focuses on communicating breastfeeding advantages; Protection involves
legislation and policy to enable breastfeeding; Support provides interpersonal assistance and
community programs. The WHO/UNICEF Baby-Friendly Hospital Initiative incorporates all
three .
12. The Baby-Friendly Hospital Initiative (BFHI) was established by which organizations?
A) AAP and CDC
B) UNICEF and WHO
C) ALPP and IBLCE
D) FDA and NIH
Answer: B
Rationale: The BFHI was launched in 1991 by WHO and UNICEF to implement practices that
protect, promote, and support breastfeeding. It is based on the Ten Steps to Successful
Breastfeeding .
13. According to the Ten Steps, how soon after birth should a healthy newborn be placed skin-to-
skin with mother?
A) Within 1 hour
B) Within 2 hours
C) Within 4 hours
D) Within 6 hours
Answer: A
Rationale: The Ten Steps require helping all mothers initiate breastfeeding within one hour of
birth. Skin-to-skin contact immediately after birth promotes attachment, breastfeeding initiation,
and temperature regulation .
14. What is "green" or shiny stool in a breastfed newborn a sign of?
A) Gastrointestinal infection
B) Overproduction of milk with lower fat content
C) Protein allergy
D) Delayed meconium passage
Answer: B
