Reagin Antibody (Serum) - Serologic Test for Malaria
This test detects antibodies in your blood that may indicate a past or current infection with malaria parasites. It helps healthcare providers assess exposure to malaria, though it does not confirm an active infection.
["This test screens for antibodies linked to malaria exposure, not current infection."]
Key facts at a glance
- LOINC
- 111382-8
- Short code
- Reagin Ab Msmt Ser
- Synonyms
- Reagin Ab Msmt Ser
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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
The test looks for **reagin antibodies**—a type of immunoglobulin (IgG or IgM) that may develop after exposure to malaria parasites. These antibodies can appear months or years after infection and are measured in your serum. This is not a direct test for malaria parasites themselves but rather an indirect marker of exposure.
Why It’s Ordered
Doctors may order this test if you’ve traveled to or lived in areas with malaria risk, have symptoms like fever, chills, or fatigue, or if you’re at higher risk (e.g., pregnant women, immunocompromised individuals). It’s often used as a screening tool before more specific tests.
How It Works
A small blood sample is drawn and tested using an immunoassay method (likely a qualitative or semi-quantitative approach) to detect the presence of reagin antibodies. Results are reported as positive or negative, not with a numeric value.
What the Results Mean
A **positive result** suggests you may have had malaria in the past, but it doesn’t confirm an active infection. A **negative result** means no detectable reagin antibodies were found at the time of testing.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Malaria Reagin Test
Frequently asked questions
This test is primarily used for **historical exposure assessment**—it doesn’t diagnose malaria or rule out current infection. If symptoms persist or malaria is suspected, additional tests (e.g., blood smear, PCR) would be needed for confirmation.
You may receive this test if you’ve traveled to regions with malaria risk, have unexplained fever, or are being evaluated for past exposure before certain procedures (e.g., blood transfusions).
A positive result indicates you likely had malaria at some point, but it doesn’t show when or how severe the infection was. It’s not a substitute for diagnosing active malaria.
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