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Estimated 24-Hour Breast Milk Intake Volume

Published: August 9, 2026Updated: August 17, 2026

An estimate of the total breast milk a breastfeeding infant consumes over 24 hours, used with growth and hydration findings to assess feeding adequacy.

Quick summary

["This estimate helps clinicians determine whether a breastfeeding infant is likely to be taking enough milk."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
80483-1
Short code
Breast milk intake vol 24h Est
Synonyms
Breast milk intake vol 24h Est
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
estimated
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 test estimates the total volume of breast milk consumed by an infant over 24 hours. It is usually calculated from feeding records and, when appropriate, the infant's weight before and after breastfeeding.

Why might I need this test?

A clinician may use this estimate when evaluating concerns about feeding, weight gain, hydration, or how much milk an infant is transferring during breastfeeding.

How is the test performed?

Caregivers record all breastfeeding sessions over 24 hours, including the time spent and any expressed milk given. The infant may be weighed before and after selected feeds so the clinician can estimate milk intake and calculate the daily total.

How do I prepare for the test?

No special preparation or dietary restriction is needed. Keep a complete feeding diary for the instructed period and tell the clinician about formula, expressed milk, pumping, or any feeding difficulties.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

24-hour breast milk intake estimate

Frequently asked questions

Does this test measure the amount of milk in my breasts?
No. It estimates how much breast milk the infant consumed over 24 hours, usually from feeding records and pre- and post-feed weights.
Can I still breastfeed normally while tracking intake?
Yes. Normal breastfeeding should continue unless your healthcare professional gives you different instructions. Record feeds accurately for the full assessment period.
What if my baby is feeding less than usual?
Contact your baby's clinician if reduced feeding is accompanied by concerning symptoms such as lethargy, very few wet diapers, persistent vomiting, or poor responsiveness. Urgent medical assessment may be appropriate if the baby seems ill or dehydrated.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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