IBCLC Exam 2026/2027 Study Guide –
Breastfeeding, Lactation, Infant Health,
Medications & Clinical Practice Questions and
Answers
Terms in this set (457)
% of breastmilk that is carbohydrates Approximately 7%
Wikipedia. en.wikipedia.org/wiki/Breast_milk.
% of breastmilk that is fat Approximately 4%
Hale and Hartman, 2007. Textbook of Human
Lactation, page 50.
% of breastmilk that is protein Approximately .8 - 1 %
Mannel, Martens & Walker, 2008. Core Curriculum
for Lactation Consultant Practice (2nd ed.), page
272.
,% of calories in breastmilk from Approximately 40%
carbohydrates Hale and Hartman, 2007. Textbook of Human
Lactation, page 69.
% of calories in breastmilk from fat Approximately 50%
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 124.
% of calories in breastmilk from Approximately 10%
protein Mannel, Martens & Walker, 2008. Core Curriculum
for Lactation Consultant Practice (2nd ed.), page
272.
Acinus Any of the small sacs or alveoli that terminate the
ducts and are lined with secretory cells.
Merriam-Webster Medical Dictionary. Available
online: http://www.merriam-
webster.com/medical/acinus?
show=0&t=1296699192
Acrocyanosis Bluish discoloration of the hands and feet in the
newborn; peripheral cyanosis. Should not persist
beyond 24 hours after birth.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 863.
Active immunity Immunity conferred by the production of
antibodies by one's own immune system.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 868.
, Active transport Passage of drug into breastmilk assisted by
components in breastmilk.
Hale & Hartman, 2007. Textbook of Human
Lactation, page 470.
Acyclovir/Zovirax Antiviral used to treat herpes infections, L2.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 177.
Aerobic bacteria Bacteria requiring air for metabolic processes. The
breast is colonized with this type of bacteria.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 863.
AGA Appropriate for Gestational Age. Having a birth
weight between the 10th and 90th percentile on
intrauterine growth charts.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 671.
Alcohol and breastfeeding Alcohol can decrease milk supply. Breastfeeding
must be interrupted for 1 hour per drink, or until
mother is sober.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 171 & 188.
Breastfeeding, Lactation, Infant Health,
Medications & Clinical Practice Questions and
Answers
Terms in this set (457)
% of breastmilk that is carbohydrates Approximately 7%
Wikipedia. en.wikipedia.org/wiki/Breast_milk.
% of breastmilk that is fat Approximately 4%
Hale and Hartman, 2007. Textbook of Human
Lactation, page 50.
% of breastmilk that is protein Approximately .8 - 1 %
Mannel, Martens & Walker, 2008. Core Curriculum
for Lactation Consultant Practice (2nd ed.), page
272.
,% of calories in breastmilk from Approximately 40%
carbohydrates Hale and Hartman, 2007. Textbook of Human
Lactation, page 69.
% of calories in breastmilk from fat Approximately 50%
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 124.
% of calories in breastmilk from Approximately 10%
protein Mannel, Martens & Walker, 2008. Core Curriculum
for Lactation Consultant Practice (2nd ed.), page
272.
Acinus Any of the small sacs or alveoli that terminate the
ducts and are lined with secretory cells.
Merriam-Webster Medical Dictionary. Available
online: http://www.merriam-
webster.com/medical/acinus?
show=0&t=1296699192
Acrocyanosis Bluish discoloration of the hands and feet in the
newborn; peripheral cyanosis. Should not persist
beyond 24 hours after birth.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 863.
Active immunity Immunity conferred by the production of
antibodies by one's own immune system.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 868.
, Active transport Passage of drug into breastmilk assisted by
components in breastmilk.
Hale & Hartman, 2007. Textbook of Human
Lactation, page 470.
Acyclovir/Zovirax Antiviral used to treat herpes infections, L2.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 177.
Aerobic bacteria Bacteria requiring air for metabolic processes. The
breast is colonized with this type of bacteria.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 863.
AGA Appropriate for Gestational Age. Having a birth
weight between the 10th and 90th percentile on
intrauterine growth charts.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 671.
Alcohol and breastfeeding Alcohol can decrease milk supply. Breastfeeding
must be interrupted for 1 hour per drink, or until
mother is sober.
Riordan & Wambach, 2010. Breastfeeding and
Human Lactation (4th ed.), page 171 & 188.
