Dengue Antibody IgG ELISA Test: Booking, Price, and Results
About Dengue Antibody IgG ELISA Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Dengue Fever Antibodies, Dengue Fever Virus IgG, Anti-Dengue IgG ELISA, Dengue Serology IgG |
| Sample Type | Venous blood (serum) |
| Fasting Required | No |
| Report Time | Same day to within 24 hours |
| Recommended For | All ages and genders; particularly those with fever symptoms or travel to dengue-endemic areas |
| Price | Starting at ₹300 |
What Is a Dengue Antibody IgG ELISA Test?
The dengue antibody IgG ELISA test detects IgG-class antibodies to the dengue virus in a blood sample. It uses a laboratory method called enzyme-linked immunosorbent assay (ELISA), which identifies the presence of specific antibodies with high sensitivity. Doctors typically order this test when a patient presents with a fever and related symptoms, or when past dengue exposure needs to be confirmed.
What Does a Dengue Antibody IgG ELISA Test Measure?
The dengue IgG ELISA test looks for one key component in the blood sample. Here is what it analyses:
| Parameter | What It Indicates |
|---|---|
| Dengue IgG Antibody (Index Value) | Whether IgG antibodies to the dengue virus are present in the blood, and at what level |
IgG antibodies (Immunoglobulin G) are proteins the immune system produces in response to infection. These antibodies can appear during the later stages of an active infection or remain detectable for months to years after recovery.
Why Is a Dengue Antibody IgG ELISA Test Done?
This test helps doctors understand whether a patient has had a previous or current dengue infection. Below are the key reasons it is ordered.
Common Symptoms That May Require This Test
A doctor may recommend the dengue IgG ELISA test when a patient reports the following symptoms alongside fever:
- High-grade fever that comes on suddenly
- Severe headache
- Pain behind the eyes
- Muscle and joint pain
- Nausea or vomiting
- Skin rash appearing a few days after fever onset
- Bone pain (sometimes called "breakbone fever")
Conditions This Test Can Help Detect
The test can provide information relevant to several clinical situations:
- Previous or ongoing dengue virus infection.
- Secondary dengue infections, where a person is infected by a different dengue serotype after a prior infection.
- Differentiation between a primary (first-time) and secondary (repeat) dengue infection, which is important for clinical and epidemiological assessments.
- Risk assessment for severe complications such as dengue haemorrhagic fever (a condition involving abnormal bleeding) or dengue shock syndrome.
How to Prepare and What to Expect
No special preparation is needed for the dengue IgG ELISA test, but a few simple steps can help ensure a smooth experience.
Do You Need to Fast?
No fasting is required before this test. You can eat and drink as normal before your appointment.
Practical Tips Before Your Test
The following steps will help ensure an accurate sample collection:
- Stay well hydrated on the day of your appointment.
- Inform your doctor or phlebotomist about any recent travel to dengue-prone areas.
- Dengue IgG antibodies typically begin appearing after the fourth or fifth day of illness. Testing before this point may produce a negative result even if an infection is present.
- Let your doctor know about any medications, supplements, or recent blood transfusions.
- Wear a short-sleeved or loose-fitting top for easy access to the arm.
Step-by-Step Procedure
Here is what happens during the sample collection process:
- A trained phlebotomist cleans the inside of your elbow with an antiseptic wipe.
- An elastic band is wrapped around the upper arm to make the veins easier to locate.
- A fine needle is used to draw a small amount of blood from a vein. The entire process typically takes no longer than five minutes.
- The blood is collected into a special tube and labelled with your details.
- The elastic band is removed and a small cotton pad is pressed over the site.
- The sample is sent to the laboratory, where it undergoes the ELISA procedure to detect dengue IgG antibodies.
Factors That Can Affect Accuracy
Several factors may influence the reliability of your dengue IgG ELISA test result:
- Testing too early, before antibodies have had time to develop
- Previous infections with related viruses (such as Zika or West Nile virus), which may cause cross-reactive results.
- Recent blood transfusions or other blood products received in the past few months.
- Immunosuppression, which may affect antibody production.
- Improper sample handling or storage before analysis.
Understanding Your Dengue Antibody IgG ELISA Test Results
Your results will be reported as an Index Value (IV). A doctor should always review these alongside your symptoms and medical history.
| Result | Index Value (IV) | Interpretation |
|---|---|---|
| Negative | 1.64 or below | No significant dengue IgG antibodies detected |
| Equivocal (borderline) | 1.65 to 2.84 | Borderline result; repeat testing may be advised |
| Positive | 2.85 or above | Dengue IgG antibodies detected; suggests past or current infection |
These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
Results During Special Conditions
Certain situations can affect how results are interpreted:
- Other flavivirus infections, such as West Nile virus, St. Louis encephalitis, or Zika virus, can sometimes produce a positive IgG reading on a dengue antibody IgG ELISA test. Additional testing and a detailed exposure history may be needed to identify the actual infecting virus.
- For patients who have received blood transfusions within the past few months, a positive result may not reliably reflect their own antibody status and should be interpreted with caution.
- In secondary dengue infections, IgG levels tend to rise rapidly and reach much higher levels than in a first-time infection. A fourfold or greater increase in IgG titre between two samples (taken two to four weeks apart) is a strong indicator of a recent infection.
How to Maintain Healthy Levels
Since dengue is a mosquito-borne illness, prevention is the most practical approach. The following general steps can help reduce your risk:
- Use insect repellent and wear long-sleeved clothing, especially during peak mosquito activity hours.
- Sleep under mosquito nets where necessary, particularly in high-risk areas.
- Remove any standing water around your home, as this is a common mosquito breeding site.
- Support your general immunity through balanced nutrition, adequate sleep, and regular physical activity.
Lupin Diagnostics Dengue Antibody IgG ELISA Test Price and Home Collection
The dengue antibody IgG ELISA test is available at Lupin Diagnostics with home sample collection across major Indian cities. Prices based on aggregator data are as follows:
| City | Approximate Price (₹) |
|---|---|
| Pune | ₹600 |
| Mumbai | ₹600 |
| Chennai | ₹690 |
| Bengaluru | ₹300 |
| Hyderabad | ₹600 |
| Kolkata | ₹950 |
| Guwahati | ₹950 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
- Select the test on the Lupin Diagnostics website.
- Choose your city and preferred time slot.
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre.
- Receive your report via email or WhatsApp within the stipulated turnaround time.
Home Collection
Lupin Diagnostics offers home collection for the dengue IgG ELISA test across cities in India. All samples are processed in NABL-accredited laboratories by trained technologists. Once ready, your digital report is sent directly to you via email or WhatsApp.
Frequently Asked Questions
IgM antibodies appear earlier in an infection, typically from day four or five of illness, and suggest a recent or active dengue infection. IgG antibodies appear later and may indicate past exposure or a secondary infection. Both are often tested together for a clearer clinical picture.
Dengue IgG antibodies can persist for a very long time after infection. In many individuals, they remain detectable for months to years, and in some cases for life. A positive IgG result does not necessarily mean you have a current infection.
If the dengue antibody IgG ELISA test result is positive but IgM is negative, this usually indicates a past infection rather than a current one. If both IgG and IgM are positive, this suggests an active or recent dengue infection. Your doctor will advise on next steps.
Yes, a negative result is possible if the test is done too early, before your body has produced enough antibodies. If dengue is still suspected, your doctor may recommend repeating the test approximately 10 to 12 days after initial exposure or symptom onset.
Secondary dengue infections tend to produce much higher IgG levels and carry a greater risk of severe complications such as dengue haemorrhagic fever. Identifying a secondary infection helps doctors monitor the patient more closely and make better-informed treatment decisions.
Yes. Related viruses such as Zika, West Nile virus, and chikungunya can sometimes cause cross-reactive results on a dengue IgG ELISA test. This is because these viruses share certain common antigens. Your doctor may recommend additional testing if cross-reactivity is suspected.
The dengue IgG ELISA test is most informative from day seven of illness onwards. By approximately three weeks after exposure, most individuals with a normal immune system will have developed detectable IgG antibodies. For the most accurate result, testing should be timed in line with your doctor's advice.
Dengue Antibody IgG ELISA Test: Booking, Price, and Results
