Skip to content

Fetal Brain Protein Profile (Plasma)

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

This test measures specific proteins in your blood that may help assess fetal brain development and health during pregnancy.

Quick summary

["This test supports early detection of potential neurological concerns in your unborn baby."]

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

Key facts at a glance

LOINC
48770-2
Short code
Fet BPP Pnl US
Synonyms
Fet BPP Pnl US
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us
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 This Test Is Done

Your healthcare provider may recommend this test if you’re at higher risk for certain pregnancy complications, such as preterm labor, fetal growth restrictions, or conditions affecting fetal brain development. It can also be used to monitor a baby whose health has been previously identified as concerning.

What to Expect Before the Test

You’ll typically have a small blood sample drawn from a vein in your arm. The test is usually done in a clinic or hospital setting. No special preparation is needed, but inform your provider about any medications or supplements you’re taking.

What the Test Results Mean

Results show levels of specific proteins linked to fetal brain function. Abnormal findings may signal potential issues that could require further testing or closer monitoring, such as fetal brain abnormalities or conditions affecting fetal development.

Common Causes of Abnormal Results

Elevated or altered protein levels might indicate conditions like chromosomal abnormalities, fetal infections, or exposure to certain substances. Low levels could suggest risks like preterm birth or reduced fetal growth.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Fetal Brain Protein Panel

Frequently asked questions

What does a ‘positive’ or ‘abnormal’ result mean for my baby’s health?
An abnormal result doesn’t always mean there’s a problem, but it may prompt additional testing or monitoring. Your healthcare provider will discuss findings in detail and explain next steps based on your specific situation.
How soon will I get my test results, and who will explain them?
Results are typically available within a few days to a week, depending on lab processing. Your provider or a specialist will review them with you during a follow-up visit to explain what they mean for your pregnancy.
Can I take anything to prepare for this test?
No special preparation is needed. However, always inform your provider about any medications, supplements, or health conditions you have before the test.
  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