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Fetal Fetal Fibrinogen Level (Measured in Maternal Serum)

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

This test measures the level of fibrinogen, a protein involved in blood clotting, in your blood as it relates to your developing baby. It helps assess risks for complications like preterm labor or bleeding disorders.

Quick summary

["This screening helps identify potential risks for early delivery or bleeding issues in pregnancy."]

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

Key facts at a glance

LOINC
11820-8
Short code
Fet BPD US.meas
Synonyms
Fet BPD US.meas
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-measured
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 order this test if you have a history of preterm labor, bleeding disorders, or other pregnancy-related risks. It can also be part of routine monitoring in certain high-risk pregnancies to check for early signs of complications.

What to Expect Before the Test

You’ll typically have a small blood sample drawn from your arm. No special preparation is needed, but inform your provider if you’re on blood-thinning medications or have any bleeding concerns.

What the Results Mean

Results are interpreted by your healthcare provider in the context of your pregnancy and medical history. Elevated levels may signal risks for preterm birth or placental issues, while lower levels could indicate bleeding risks. This is not a definitive diagnosis but a screening tool.

Common Causes of Abnormal Results

High levels might be linked to placental dysfunction or early labor, while low levels could suggest bleeding disorders or placental abruption. Always discuss results with your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test is primarily used as a screening tool to identify potential risks for preterm delivery or bleeding complications in pregnancy. While not a definitive diagnostic test, it can prompt further evaluation if abnormal results are found. Early identification of risks allows for timely interventions to support both maternal and fetal health.

Short name

Fetal Fibrinogen Screening

Frequently asked questions

What does a high or low fibrinogen level mean in my pregnancy?
A high or low level alone doesn’t indicate a problem, but it may signal a need for additional testing or closer monitoring. Your provider will discuss findings with you and recommend next steps based on your unique situation.
Can I eat or drink before this test?
No special diet or fasting is required for this test. You can eat and drink normally as usual.
Is this test painful?
The blood draw may cause mild discomfort, but it’s a quick and routine procedure. Most people feel little to no pain 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