Breast Milk Feeding Session Length — Infant Feeding Practices Study II (IFPS-II)
A survey measure of how long an infant typically breastfeeds during one feeding session.
This measure describes the usual length of a breastfeeding session and is not a laboratory blood or urine test.
Key facts at a glance
- LOINC
- 64014-4
- Short code
- Baby fed breast milk session len IFPS-II
- Synonyms
- Baby fed breast milk session len IFPS-II
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 10
- Ref high
- 40
- Critical range
- — – 500 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ifps-ii
- CPT
- 84484
- SNOMED
- 302774002
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What is this test?
This is a patient-reported measure from the Infant Feeding Practices Study II (IFPS-II). It records how long a baby usually breastfeeds during a feeding session rather than measuring a substance in a blood sample.
Why might I need this test?
It may be used to describe breastfeeding patterns or feeding routines in research and infant-feeding assessments. The information can help put concerns about feeding duration into context.
How is the test performed?
A caregiver may be asked through a questionnaire, interview, or feeding record to estimate the typical length of a breastfeeding session. There is usually no need to collect a laboratory specimen.
How do I prepare for the test?
Think about a typical feeding session, including both sides of the breast if applicable. Answer based on the baby's usual routine rather than an unusually short or long session, and clarify any time limits or measurement instructions provided.
Reference range
Adult: 10-40 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Session length varies among infants and can change with age, feeding frequency, milk supply, and the infant's cues. An unusually long or short session may prompt a discussion about latch, positioning, feeding frequency, or milk intake, but this measure alone cannot diagnose a feeding or milk-supply problem.
Short name
Breast milk feeding session length
Frequently asked questions
Is this a laboratory test?
What counts as one breastfeeding session?
Does a short feeding session mean the baby is not getting enough milk?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 17, 2026. · Read our editorial policy