Neutrophil count in fetal blood (manual cell differential)
This test measures the number of neutrophils, a type of white blood cell, in your baby’s blood. It may be used to assess fetal health or guide certain medical decisions.
["Neutrophils help fight infections; this test helps monitor fetal immune system activity."]
Key facts at a glance
- LOINC
- 66139-7
- Short code
- Neutrophils # Bld Fetus Manual
- Synonyms
- Neutrophils # Bld Fetus Manual
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- manual-count
- 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 Is This Test Done?
A neutrophil count in fetal blood may be ordered during pregnancy if there are concerns about fetal infection, immune system development, or specific medical conditions. It can also be part of a broader evaluation if your healthcare provider suspects issues like preterm labor or fetal distress.
What Does the Test Involve?
A small blood sample is taken from your baby during a procedure called a fetal blood sampling (cordocentesis). The sample is then analyzed under a microscope to count neutrophils and other white blood cells manually.
What Are Normal Results?
Results are not provided with specific numeric ranges here, as they depend on clinical context and individual circumstances. Your healthcare provider will interpret the results in relation to your baby’s overall health and medical history.
What Are the Risks?
While generally safe, fetal blood sampling carries a small risk of complications, such as bleeding, infection, or fetal distress. Your healthcare provider will discuss these risks with you before the procedure.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: Neutrophils in fetal blood can indicate: - **Increased levels**: May suggest fetal infection, inflammation, or immune response to stress. - **Decreased levels**: Could indicate immune deficiency or other underlying conditions requiring further evaluation.
Short name
Fetal Neutrophil Count
Frequently asked questions
Why might my healthcare provider recommend this test?
How soon will I get my results?
Can I prevent complications from this test?
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 16, 2026. · Read our editorial policy