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Neutrophil count in fetal blood (absolute)

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

This test measures the number of neutrophils, a type of white blood cell, in your baby’s blood. Neutrophils help fight infections.

Quick summary

["Neutrophils in fetal blood can help assess infection risk or immune function during pregnancy."]

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

Key facts at a glance

LOINC
74459-9
Short code
Imm Granulocytes NFr Bld Fetus
Synonyms
Imm Granulocytes NFr Bld Fetus
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Doctors may order this test if they suspect your baby has an infection (such as sepsis), an immune disorder, or if there are signs of inflammation in the fetal environment. It can also be part of monitoring for certain genetic or congenital conditions.

What to Expect Before the Test

This test typically involves a small blood draw from your baby during a prenatal procedure like a cord blood sample, amniocentesis, or fetal blood sampling. You may need to prepare by staying hydrated or fasting, depending on the procedure.

What the Results Mean

Results are interpreted by your healthcare provider based on your baby’s medical history and clinical context. Elevated or low neutrophil counts may signal underlying health concerns that need further evaluation.

Common Causes of Abnormal Results

High neutrophil counts in fetal blood might indicate infection, inflammation, or certain genetic disorders. Low counts could suggest immune deficiencies or other congenital conditions. Always discuss results with your doctor.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Fetal Neutrophil Count

Frequently asked questions

What triggers this test during pregnancy?
This test is often requested if your doctor suspects fetal infection, inflammation, or an immune-related condition based on symptoms like fever, abnormal fetal movement, or ultrasound findings.
How is the blood sample collected for this test?
Blood is drawn through a needle inserted into the umbilical cord or via a small incision during a specialized prenatal procedure, such as a cordocentesis or fetal blood sampling.
Are there any risks associated with this test?
As with any invasive prenatal procedure, there are minor risks like infection or bleeding. Your healthcare provider will discuss these risks with you before the test and monitor your baby closely afterward.
  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