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Maternal Serum/Plasma Biomarker Profile for Pregnancy-Related Screening (Composite Panel)

Published: August 9, 2026Updated: August 17, 2026

This test includes a group of blood tests to assess various health markers in your maternal blood, often used to evaluate fetal development, maternal health, or screen for genetic or metabolic conditions.

Quick summary

["This screening helps monitor key aspects of your pregnancy and early detection of potential issues."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
79192-1
Short code
Maternal pregnancy info
Synonyms
Maternal pregnancy info
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
44
Ref high
147
Critical range
0.5 N/A – —
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
84075
SNOMED
27550007
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

What This Test Measures

This test evaluates multiple substances in your blood that are critical during pregnancy. These may include markers for protein levels, hormone activity, and metabolic functions that support fetal growth and maternal health. Some tests may also check for genetic or chromosomal conditions.

Common Components of the Panel

While the exact tests vary by lab, this panel often includes measurements such as alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), and other proteins or enzymes that reflect pregnancy-specific processes. Some labs may also assess glucose, lipids, or other biomarkers depending on clinical need.

Why It’s Done

Your healthcare provider may order this test to monitor your pregnancy’s progress, screen for conditions like Down syndrome or neural tube defects, or assess metabolic health (e.g., diabetes risk). It can also help detect maternal conditions like anemia or thyroid disorders that may impact pregnancy.

Sample Collection and Preparation

A blood sample is drawn from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause significant discomfort. The blood is processed to separate serum or plasma for testing. Avoid eating or drinking anything (except water) for 8–12 hours before the test if instructed.

Reference range

Adult: 44-147 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance and Implications

Short name

Pregnancy Biomarker Screen

Frequently asked questions

What does a positive or abnormal result mean?
Abnormal results may indicate potential risks, such as chromosomal abnormalities in the fetus, metabolic disorders, or maternal health issues. Your healthcare provider will discuss results in detail and may recommend further testing or interventions based on findings.
How soon will I get my results?
Results are typically available within 1–3 business days, depending on the lab and the number of tests included. Your provider will contact you to review them and explain next steps.
Can I fast before this test?
Yes, fasting may be required for some components of this test (e.g., glucose-related markers). Follow your provider’s instructions carefully, as dietary restrictions can affect accuracy.
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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 17, 2026. · Read our editorial policy