Dengue Antibody, IgG, Rapid Detection Test
This rapid test detects IgG antibodies to the dengue virus, indicating a past or secondary dengue infection. A quick blood test that provides results within 24 hours.
- DHA-licensed lab
- Includes Doctor Consultation
- Physician-reviewed
- Same Day Collection
24 hours
Turnaround
Blood
Sample
What the Dengue Antibody, IgG, Rapid Detection Test test tells you
Dengue is a mosquito-borne viral infection found across much of Asia, Africa, the Americas and the Pacific, and cases are seen in the UAE in travellers returning from countries where it circulates. When the virus infects someone the immune system responds in stages, and it helps to know which stage each antibody belongs to. IgM is the early antibody: it appears within days, fades over the following months, and points to a recent or current infection. IgG is the late and durable part of the response: it appears afterwards, persists for years, and usually indicates past exposure or existing immunity. This test looks for IgG.
In a first dengue infection IgG appears roughly a week or more after symptoms begin and then stays, often for life. Its behaviour changes in a repeat infection with a different dengue serotype: the immune system recognises the viral family and produces IgG quickly, so a strong IgG early in the illness suggests a secondary infection rather than a first one. That distinction matters, because second infections carry a higher risk of the severe, plasma-leaking form of dengue.
Because IgG lingers indefinitely, a positive result on its own says that you have met dengue at some point, not that you have it now. It is read together with IgM and, where available, the NS1 antigen, and always against the timeline of your illness and where you have travelled. Your doctor interprets the pattern, not any single line on the test.
Dengue can become severe quickly, so this test is not a substitute for being seen. If you have a fever and have recently been somewhere dengue is common, arrange medical assessment rather than booking a test and waiting for a report. Get emergency care immediately for severe abdominal pain, persistent vomiting, bleeding from the gums or nose, blood in vomit or stool, or extreme lethargy or restlessness. These warning signs typically appear as the fever settles, which is exactly when people assume they are recovering.
Recommended when dengue fever is suspected, especially in endemic or travel-related settings, to distinguish primary from secondary infection.
- Separating first from repeat infection
An early, strong IgG alongside IgM points to a second dengue infection, which your doctor will watch more closely.
- Documenting past exposure
A positive IgG with no current symptoms records that you have had dengue before, which is useful background for any future fever.
- Completing the dengue picture
IgG covers the late part of the antibody timeline that IgM and NS1 antigen testing do not reach.
- Assessing fever after travel
In someone who has returned from a country where dengue circulates, antibody testing helps place the illness in context alongside clinical assessment.
Reasons your doctor may request the Dengue Antibody, IgG, Rapid Detection Test test
Your doctor may order this test for any of the reasons below. Some are routine checks, others follow specific symptoms or an earlier result.
Fever after travel
- Fever, severe headache and marked joint or muscle pain after travel to a region where dengue circulates.
- A rash with fever in someone living in or returning from a dengue area.
Later in the illness
- Illness continuing beyond the first few days, when antibodies have had time to appear.
- Follow-up testing after an earlier sample was taken too early to show antibodies.
Repeat infection
- Suspected repeat dengue infection in a person who has had it before.
A Non-Reactive / Negative result means no dengue IgG was detected. In a first infection IgG appears late, so a negative result early in an illness does not settle the question and a repeat sample may be needed. A Reactive / Positive result means IgG is present. Because this antibody persists for years, a positive result on its own says you have met dengue at some point rather than that you have it now. A strong IgG early in an illness suggests a repeat infection with a different serotype rather than a first one. Related flaviviruses such as Zika, or vaccines against them, can cross-react. Your doctor reads the result with your IgM, the NS1 antigen where available, the timing of your symptoms and your travel history. Fever after travel to a dengue area needs prompt medical assessment.
Medically reviewed by Dr Nirupama Sabhapathy
This test is reported descriptively rather than on a numeric scale: each finding below explains what your report may say.
No dengue IgG antibody found; early in a first infection it may not have appeared yet.
Dengue IgG present: exposure at some point, not necessarily a current infection.
Ranges are a guide: your physician interprets your result alongside your symptoms and history.
What a higher result can point to
- Dengue infection in the past, sometimes years earlier, since IgG persists indefinitely.
- A current secondary dengue infection, in which IgG rises quickly and early.
- The convalescent stage of a first dengue infection, once IgG has developed.
- Cross-reaction with other flaviviruses such as Zika, yellow fever or Japanese encephalitis, including after vaccination against them.
These are possibilities, not diagnoses. A single value outside the reference range is interpreted alongside your symptoms, history and other tests: your doctor decides what it means for you.
What this test cannot tell you
- A positive IgG cannot by itself say whether the infection is current, because the antibody persists for years after recovery.
- Antibodies raised against related flaviviruses, or against vaccines for them, can cross-react and produce a positive result without dengue.
- Testing too early in the illness can give a negative result even in genuine dengue, so a repeat sample later may be needed.
- No antibody result replaces clinical assessment: fever after travel to a dengue area needs prompt medical review, and severe abdominal pain, persistent vomiting, bleeding from the gums or nose, blood in vomit or stool, or extreme lethargy or restlessness need emergency care straight away.
Risks of the blood draw
- Mild bruising or brief soreness where the needle went in.
- Occasional lightheadedness, which settles after a few minutes of rest.
- Bleeding or infection at the site, which is rare with sterile single-use equipment.
- 1IgG is the long-lasting antibody the immune system makes against dengue, while IgM is the early one.
- 2IgG appears late in a first infection but early and strongly in a repeat one.
- 3A positive result signals exposure at some point, not necessarily current illness.
- 4It is interpreted together with IgM, NS1 antigen and the timing of your symptoms.
- 5Fever with recent travel to a dengue area needs prompt medical assessment, not a self-booked test and a wait for the report; warning signs appearing as the fever settles are an emergency.
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Frequently Asked Questions
Everything you need to know about the Dengue Antibody, IgG, Rapid Detection Test test. Can't find what you're looking for?
Talk to our team→A negative result means no dengue IgG was detected. If you are well, it suggests you have not had dengue before. If you are ill, it does not settle the question: in a first infection IgG appears late, so a sample taken in the first days of fever can be negative in genuine dengue, and your doctor may request a second sample later.
It points towards a repeat dengue infection with a different serotype rather than a first one. In a first infection IgG develops late, but in a second infection it rises quickly and strongly. This matters because a later infection with a different serotype can be more severe, so your doctor reads it with IgM, the NS1 antigen and the timing of your symptoms and watches you closely.
No. IgG alone cannot show whether an infection is current, and in a first infection it may not have appeared yet. Doctors assessing a fever pair it with IgM and, where available, the NS1 antigen, and read all three against the day your fever started. Fever after travel to a dengue area needs prompt medical assessment rather than a self-booked test and a wait for the report.
Severe abdominal pain, persistent vomiting, bleeding from the gums or nose, blood in vomit or stool, and extreme lethargy or restlessness need emergency care straight away. These signs often appear as the fever is settling, when people assume they are recovering. Do not wait for an antibody result if any of them develop.
Yes, that is what it is best at. Dengue IgG persists for years after recovery, so a positive result in someone who is well signals exposure at some point, sometimes long ago. Antibodies from related flaviviruses or their vaccines can also give a positive result, so tell your doctor about past travel, earlier illnesses and vaccinations when reading it.
Not on its own. IgG stays in the blood for years after recovery, so a positive result may reflect an old infection. Your doctor looks at IgM, the NS1 antigen and the timing of your symptoms to judge whether the infection is current.
IgM is the antibody your body makes first. It appears within days of the fever starting and fades over the following months, so it suggests recent or current infection. IgG comes later, lasts for years, and usually reflects past exposure or immunity.
You are protected against the particular dengue serotype you had, but not against the others that circulate. A later infection with a different serotype is possible and can be more severe, which is why mosquito precautions still matter.
Yes. Dengue belongs to the flavivirus family, and antibodies raised against relatives such as Zika, yellow fever or Japanese encephalitis (whether from infection or vaccination) can cross-react. Your travel and vaccination history helps your doctor allow for this.
No. No fasting or special preparation is needed, and you can eat, drink and take your usual medicines. What matters is telling your doctor the day your fever started, where and when you travelled, any previous dengue, and any yellow fever, Japanese encephalitis or dengue vaccine.
The dengue IgG test is AED 120, including a physician-reviewed report, with results usually within 24 hours. Home collection anywhere in Dubai is free when your order reaches AED 300 or includes a package; below that, a AED 100 home collection fee applies (AED 50 for a lab walk-in).