1|Page
Certified Lactation Consultant (CLC) Exam |
Breastfeeding Medicine, Lactation
Management, Maternal-Child Health, Infant
Nutrition | Q&A with Rationales | Verified
Questions & Answers
Exam Structure:
Subject: Certified Lactation Consultant Exam Preparation
Source: Certified Lactation Consultant Exam (Verified Questions & Answers)
Format: Question & Answer with Rationales
1. A staff member is fond of telling mothers how expensive it is to
formula feed infants and how inexpensive it is to breastfeed. What is
she doing when she talks to mothers on this topic?
Correct Answer: Promoting breastfeeding
Rationale:
1. Promoting breastfeeding involves highlighting its benefits over formula
feeding.
2. Discussing cost comparison is a promotional strategy, not just support or
protection.
3. This approach aims to encourage mothers to choose breastfeeding by
addressing economic factors.
2. Who currently collects the most comprehensive breastfeeding
statistics in the United States?
Correct Answer: The Centers for Disease Control (CDC)
Rationale:
1. The CDC maintains national breastfeeding surveillance systems.
2. CDC’s National Immunization Survey (NIS) includes breastfeeding data.
, 2|Page
3. This is the most comprehensive and regularly updated source of U.S.
breastfeeding statistics.
3. Which of the following statements about prolactin is TRUE?
Correct Answer: Prolactin causes milk to be made.
Rationale:
1. Prolactin is the primary hormone responsible for milk synthesis
(lactogenesis).
2. It is produced in the anterior pituitary gland, not the renal gland.
3. Oxytocin, not prolactin, causes milk release (let-down).
4. Which of the following mechanisms cause oxytocin to be released?
Correct Answer: Nipple stretching with appropriate latch-on
Rationale:
1. Oxytocin release is triggered by nipple stretching and stimulation during
latch.
2. This neuroendocrine reflex causes milk ejection (let-down).
3. Complete placental delivery is related to lactogenesis II, not oxytocin
release.
5. Lactogenesis III requires which of the following to succeed?
Correct Answer: Frequent milk removal and nipple stimulation
Rationale:
1. Lactogenesis III (galactopoiesis) is the maintenance of milk production.
2. Frequent and effective milk removal signals the body to continue producing
milk.
3. Nipple stimulation maintains prolactin receptor sensitivity.
6. One way the fat content of milk suckled by the baby is determined
is:
Correct Answer: The speed/efficiency with which the baby removes milk
Rationale:
1. Hindmilk (higher fat) is released as the breast empties.
2. Efficient milk removal ensures the baby receives the fat-rich milk that
flows later in the feeding.
3. Faster, more effective suckling leads to higher fat intake per feed.
, 3|Page
7. Which of the following is the MOST effective at increasing gastrin
and CCK and decreasing somatostatin in the baby?
Correct Answer: Feeding with species-specific milk
Rationale:
1. Human milk is species-specific for human infants.
2. It contains hormones and growth factors that optimize infant digestion.
3. Breastfeeding increases gut hormones like gastrin and CCK while reducing
somatostatin.
8. According to the AAP regarding weight loss in the breastfeeding
newborn:
Correct Answer: Weight loss of more than 7% from birth weight indicates
possible breastfeeding problems.
Rationale:
1. AAP considers >7% weight loss a red flag requiring evaluation.
2. It does not automatically require formula but indicates possible issues with
transfer or supply.
3. Ongoing assessment of latch, feeding frequency, and output is needed.
9. When undernourished mothers were supplemented with extra
energy in their diet, they:
Correct Answer: Responded to their infants more appropriately
Rationale:
1. Maternal nutrition affects maternal behavior and responsiveness.
2. Energy supplementation improved maternal caregiving and interaction.
3. Milk quantity and quality were not significantly improved in
undernourished mothers with short-term supplementation.
10. Harmful bacteria have difficulty growing in the breastfed infants'
gut because the composition of breastmilk:
Correct Answer: Fosters the growth of good bacteria that crowd out other
organisms
Rationale:
1. Breastmilk contains prebiotics (human milk oligosaccharides) that
promote beneficial bacteria like Bifidobacteria.
2. These good bacteria outcompete pathogens for resources and attachment
, 4|Page
sites.
3. Breastmilk also contains IgA and other antimicrobial factors.
11. Colostrum is made after there is a complete delivery of the
placenta. True or False?
Correct Answer: False
Rationale:
1. Colostrum is produced during pregnancy (late second trimester onward).
2. It is available at birth before placental delivery.
3. Placental delivery triggers lactogenesis II (onset of copious milk), not
colostrum production.
12. Lactogenesis II occurs after the complete delivery of the placenta.
True or False?
Correct Answer: True
Rationale:
1. Placental delivery causes a sharp drop in progesterone, removing inhibition
on prolactin.
2. This hormonal shift triggers lactogenesis II (milk “coming in”).
3. Occurs approximately 30-72 hours postpartum.
13. Lactogenesis III is also called Galactocemia. True or False?
Correct Answer: False
Rationale:
1. Lactogenesis III is correctly called galactopoiesis (maintenance of milk
production).
2. Galactocemia refers to the presence of galactose in the blood, not milk
production.
3. This is a common terminology trap on exams.
14. The following statement about Lactogenesis III is NOT true:
Correct Answer: It is driven by the nursing parent's fluid intake.
Rationale:
1. Lactogenesis III is driven by frequent, effective milk removal, not maternal
fluid intake.
2. Excessive fluid intake does not increase milk supply.
Certified Lactation Consultant (CLC) Exam |
Breastfeeding Medicine, Lactation
Management, Maternal-Child Health, Infant
Nutrition | Q&A with Rationales | Verified
Questions & Answers
Exam Structure:
Subject: Certified Lactation Consultant Exam Preparation
Source: Certified Lactation Consultant Exam (Verified Questions & Answers)
Format: Question & Answer with Rationales
1. A staff member is fond of telling mothers how expensive it is to
formula feed infants and how inexpensive it is to breastfeed. What is
she doing when she talks to mothers on this topic?
Correct Answer: Promoting breastfeeding
Rationale:
1. Promoting breastfeeding involves highlighting its benefits over formula
feeding.
2. Discussing cost comparison is a promotional strategy, not just support or
protection.
3. This approach aims to encourage mothers to choose breastfeeding by
addressing economic factors.
2. Who currently collects the most comprehensive breastfeeding
statistics in the United States?
Correct Answer: The Centers for Disease Control (CDC)
Rationale:
1. The CDC maintains national breastfeeding surveillance systems.
2. CDC’s National Immunization Survey (NIS) includes breastfeeding data.
, 2|Page
3. This is the most comprehensive and regularly updated source of U.S.
breastfeeding statistics.
3. Which of the following statements about prolactin is TRUE?
Correct Answer: Prolactin causes milk to be made.
Rationale:
1. Prolactin is the primary hormone responsible for milk synthesis
(lactogenesis).
2. It is produced in the anterior pituitary gland, not the renal gland.
3. Oxytocin, not prolactin, causes milk release (let-down).
4. Which of the following mechanisms cause oxytocin to be released?
Correct Answer: Nipple stretching with appropriate latch-on
Rationale:
1. Oxytocin release is triggered by nipple stretching and stimulation during
latch.
2. This neuroendocrine reflex causes milk ejection (let-down).
3. Complete placental delivery is related to lactogenesis II, not oxytocin
release.
5. Lactogenesis III requires which of the following to succeed?
Correct Answer: Frequent milk removal and nipple stimulation
Rationale:
1. Lactogenesis III (galactopoiesis) is the maintenance of milk production.
2. Frequent and effective milk removal signals the body to continue producing
milk.
3. Nipple stimulation maintains prolactin receptor sensitivity.
6. One way the fat content of milk suckled by the baby is determined
is:
Correct Answer: The speed/efficiency with which the baby removes milk
Rationale:
1. Hindmilk (higher fat) is released as the breast empties.
2. Efficient milk removal ensures the baby receives the fat-rich milk that
flows later in the feeding.
3. Faster, more effective suckling leads to higher fat intake per feed.
, 3|Page
7. Which of the following is the MOST effective at increasing gastrin
and CCK and decreasing somatostatin in the baby?
Correct Answer: Feeding with species-specific milk
Rationale:
1. Human milk is species-specific for human infants.
2. It contains hormones and growth factors that optimize infant digestion.
3. Breastfeeding increases gut hormones like gastrin and CCK while reducing
somatostatin.
8. According to the AAP regarding weight loss in the breastfeeding
newborn:
Correct Answer: Weight loss of more than 7% from birth weight indicates
possible breastfeeding problems.
Rationale:
1. AAP considers >7% weight loss a red flag requiring evaluation.
2. It does not automatically require formula but indicates possible issues with
transfer or supply.
3. Ongoing assessment of latch, feeding frequency, and output is needed.
9. When undernourished mothers were supplemented with extra
energy in their diet, they:
Correct Answer: Responded to their infants more appropriately
Rationale:
1. Maternal nutrition affects maternal behavior and responsiveness.
2. Energy supplementation improved maternal caregiving and interaction.
3. Milk quantity and quality were not significantly improved in
undernourished mothers with short-term supplementation.
10. Harmful bacteria have difficulty growing in the breastfed infants'
gut because the composition of breastmilk:
Correct Answer: Fosters the growth of good bacteria that crowd out other
organisms
Rationale:
1. Breastmilk contains prebiotics (human milk oligosaccharides) that
promote beneficial bacteria like Bifidobacteria.
2. These good bacteria outcompete pathogens for resources and attachment
, 4|Page
sites.
3. Breastmilk also contains IgA and other antimicrobial factors.
11. Colostrum is made after there is a complete delivery of the
placenta. True or False?
Correct Answer: False
Rationale:
1. Colostrum is produced during pregnancy (late second trimester onward).
2. It is available at birth before placental delivery.
3. Placental delivery triggers lactogenesis II (onset of copious milk), not
colostrum production.
12. Lactogenesis II occurs after the complete delivery of the placenta.
True or False?
Correct Answer: True
Rationale:
1. Placental delivery causes a sharp drop in progesterone, removing inhibition
on prolactin.
2. This hormonal shift triggers lactogenesis II (milk “coming in”).
3. Occurs approximately 30-72 hours postpartum.
13. Lactogenesis III is also called Galactocemia. True or False?
Correct Answer: False
Rationale:
1. Lactogenesis III is correctly called galactopoiesis (maintenance of milk
production).
2. Galactocemia refers to the presence of galactose in the blood, not milk
production.
3. This is a common terminology trap on exams.
14. The following statement about Lactogenesis III is NOT true:
Correct Answer: It is driven by the nursing parent's fluid intake.
Rationale:
1. Lactogenesis III is driven by frequent, effective milk removal, not maternal
fluid intake.
2. Excessive fluid intake does not increase milk supply.
