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DENVIRUS IgM Antibody, Serum

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

This test measures the presence of Immunoglobulin M (IgM) antibodies against dengue virus in your blood. IgM antibodies typically develop within days to weeks after infection and can help confirm an acute dengue virus infection.

Quick summary

["IgM antibodies may indicate recent dengue virus exposure; results help doctors diagnose acute infection."]

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

Key facts at a glance

LOINC
86859-6
Short code
DENV3 NAb Titr Spec Nt
Synonyms
DENV3 NAb Titr Spec Nt
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
neut
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 Does This Test Measure?

IgM antibodies are a type of protein your immune system produces in response to an infection. In the case of dengue virus, IgM antibodies appear shortly after you become infected and can persist for weeks or months. This test specifically looks for these antibodies in your serum to determine if you’ve recently been exposed to the virus.

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms like fever, headache, nausea, or muscle pain that could be consistent with dengue fever. It’s also used in cases where dengue is suspected in areas where the virus is common.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw blood, similar to other routine blood tests. The process usually takes a few minutes.

What Are Common Symptoms?

Symptoms of dengue fever can include sudden high fever, severe headache, pain behind the eyes, joint and muscle pain, nausea, vomiting, and swollen glands. Some people may also experience rash or bleeding gums. If you experience these symptoms, especially in an area where dengue is prevalent, inform your healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgM Antibody to Dengue Virus

Frequently asked questions

How long does it take to get results from this test?
Results from this test are typically available within a few days to a week, depending on your lab’s processing times. Your healthcare provider will discuss the results with you during your follow-up visit.
What does a positive result mean?
A positive result indicates the presence of IgM antibodies to dengue virus, suggesting you likely had an acute infection within the last few weeks. However, false positives can occur, so your doctor may also consider clinical symptoms and other tests for confirmation.
Can I have dengue virus even if my IgM test is negative?
Yes, it’s possible. IgM antibodies may not be detectable if the infection was resolved earlier or if you had a mild case. Your doctor may recommend additional testing or monitoring if symptoms persist or if dengue is suspected in your area.
  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