Skip to content

Reagin Antibody Measurement (Serum)

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

This test measures the presence of reagin antibodies in your blood, which may indicate an allergic reaction or certain parasitic infections.

Quick summary

["Reagin antibodies can help diagnose conditions like allergic reactions or parasitic infections."]

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

Key facts at a glance

LOINC
111351-3
Short code
Reagin Ab Msmt CSF
Synonyms
Reagin Ab Msmt CSF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

What Does This Test Measure?

Reagin antibodies are a type of antibody that can be produced in response to certain allergens or parasitic infections. This test detects these antibodies in your serum, which may help identify underlying allergic sensitivities or parasitic exposure.

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms like skin rashes, respiratory issues, or other signs of allergic reactions or parasitic infections, especially in certain clinical settings like tropical medicine or allergy evaluations.

How Is the Test Performed?

A blood sample is drawn from a vein in your arm. The serum portion of the blood is then analyzed using an immunoassay method to detect reagin antibodies.

What Are Common Reasons for Testing?

Common reasons include diagnosing allergic reactions (e.g., to parasites), evaluating suspected parasitic infections, or assessing immune responses in specific clinical contexts.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Reagin antibodies are often associated with allergic hypersensitivity reactions, particularly to parasitic infections like schistosomiasis. Elevated levels may suggest an ongoing immune response to these pathogens, guiding treatment decisions or monitoring allergic conditions.

Short name

Reagin Antibody Test

Frequently asked questions

What does a positive result mean?
A positive result indicates the presence of reagin antibodies, which may suggest an allergic reaction or parasitic exposure. However, results alone do not confirm a diagnosis; they are used alongside clinical findings and other tests.
Can this test be used to diagnose a specific illness?
This test helps identify the presence of reagin antibodies but is not definitive for diagnosing a specific illness. It is often used in conjunction with clinical symptoms, physical exams, and other diagnostic tests for a complete evaluation.
How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on laboratory processing times.
  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