Skip to content

Fetal abdominal perimeter mean measurement from gestational age

Published: August 9, 2026Updated: August 16, 2026

This test provides an average measurement of the fetal abdominal circumference at a specific point in pregnancy, based on your due date. It helps assess fetal growth and development.

Quick summary

["This test helps monitor how well your baby is growing inside the womb."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
11991-7
Short code
Fet Abd Perimeter.mean Est from GA
Synonyms
Fet Abd Perimeter.mean Est from GA
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
estimated-from-gestational-age
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

Why Is This Test Done?

Your healthcare provider may order this test during prenatal ultrasounds to check if your baby’s growth is on track. It can help identify potential issues early, such as growth restrictions or other developmental concerns.

What Does This Test Measure?

The test measures the average circumference of the fetal abdomen, which includes parts like the intestines and other abdominal organs. This measurement is compared to expected growth patterns for your gestational age.

How Is This Test Performed?

This test is performed using ultrasound imaging. A technician applies a gel to your abdomen and uses sound waves to create images of your baby. The technician measures the abdominal circumference as part of the ultrasound scan.

What Are the Results?

Results are not provided as a single numeric value but are instead interpreted in relation to standard growth curves for your gestational age. Your healthcare provider will discuss whether the results are within expected ranges or if further evaluation is needed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal fetal abdominal circumference measurements can signal potential health concerns, such as intrauterine growth restriction (IUGR) or other fetal complications. Regular monitoring helps ensure timely interventions if needed.

Short name

Fetal Abdomen Circumference (Average)

Frequently asked questions

How often will I need this test?
The frequency depends on your pregnancy and healthcare provider’s recommendations. It may be done once or multiple times during pregnancy, especially if you have risk factors for complications.
What does an abnormal result mean?
An abnormal result may indicate that your baby’s growth is slower than expected. Your provider will review the results with you and may recommend additional tests or monitoring to assess your baby’s health.
Can I influence the results of this test?
While you cannot directly influence the ultrasound measurement itself, maintaining a healthy pregnancy—through proper nutrition, regular prenatal care, and avoiding harmful substances—can support your baby’s growth.
  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 16, 2026. · Read our editorial policy