IBCLC Cheat Sheet 2026

The 30 highest-yield IBCLC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. A weighted feed (test weight) is performed using which type of scale? → Infant scale accurate to at least 2 grams
2. What is the main advantage of a cohort study over a cross-sectional study when researching breastfeeding duration? → It can establish temporal relationships and track changes over time
3. According to the IBLCE Code of Professional Conduct, IBCLCs must maintain client confidentiality EXCEPT when: → Disclosure is required by law or is necessary to prevent serious harm
4. What is the appropriate IBCLC response when current evidence on a clinical question is limited or conflicting? → Defer to client preference while acknowledging uncertainty
5. How often must an IBCLC recertify, and what are the two pathways? → Every 5 years by either continuing education (CERPs) or re-examination
6. When counseling an adolescent mother about breastfeeding, which communication strategy is most important to employ? → Use age-appropriate language, shorter sessions, and peer support connections
7. What is the purpose of a confidence interval in research reporting? → To indicate the range within which the true population value likely falls
8. Which of the following DOES NOT have a reputation for increasing the probability of difficult parental identity integration? → Insecure attachment in children
9. How does the composition change from colostrum to mature milk during the first two weeks postpartum? → Sodium and protein concentrations decrease while lactose and fat concentrations increase
10. Which assessment tool allows an IBCLC to directly evaluate an infant's tongue movement, palatal integrity, and sucking strength? → Gloved finger assessment
11. What is the recommended suction level when using an electric breast pump? → The highest comfortable setting that still maintains effective milk flow
12. What is the caloric content of mature human milk per ounce? → Approximately 20 calories per ounce
13. What is the primary hormone responsible for milk ejection (let-down reflex)? → Oxytocin
14. Which container type is most appropriate for long-term freezer storage of expressed breast milk? → Hard-sided BPA-free plastic or glass containers designed for breast milk storage
15. A breastfeeding mother presents with a red, wedge-shaped area on her breast, fever of 38.5C, and flu-like symptoms. What is the most likely diagnosis? → Lactational mastitis
16. What is the safest method for thawing previously frozen breast milk? → Overnight thawing in the refrigerator
17. Which immunoglobulin is most abundant in human breast milk and provides mucosal immunity to the infant? → Secretory IgA (sIgA)
18. What is the recommended position of the nipple within the breast pump flange tunnel during pumping? → The nipple should move freely in the tunnel without touching the sides
19. Formula feeding is simpler because a bottle may be made anywhere. → False
20. Which class of antidepressants is generally considered most compatible with breastfeeding? → Selective serotonin reuptake inhibitors (SSRIs), particularly sertraline and paroxetine
21. Which of the following is considered a late sign of hunger in an infant? → Crying
22. A mother's partner is insisting on giving formula against the mother's wishes. The mother appears distressed but remains silent. What is the IBCLC's role? → Privately assess the mother's wishes and advocate for her autonomous decision-making
23. What does the acronym CERP stand for? → Continuing Education Recognition Point
24. What is the recommended method for sanitizing breast pump parts that contact breast milk, especially for NICU infants? → Washing with soap and water followed by sterilization per CDC guidelines
25. A mother wants to combine freshly pumped warm milk with cold refrigerated milk. What is the correct guidance? → Cool the fresh milk in the refrigerator first before combining with cold milk
26. Compared to babies fed formula, breastfed babies had a higher IQ. → True
27. A mother is concerned because her breastfed infant has yellow, seedy stools. She asks if this is normal. What is the correct response? → Yellow, seedy stools are the normal stool pattern for exclusively breastfed infants
28. A mother who speaks limited English is struggling to understand breastfeeding instructions. What is the most appropriate action? → Use a professional medical interpreter rather than relying on family members to translate
29. What study design is considered the gold standard for evaluating the effectiveness of a breastfeeding intervention? → Randomized controlled trial
30. Approximately how many IBCLCs are currently certified worldwide? → About 34,000