Immunoglobulin IgG Test: Booking, Price, and Results
About Immunoglobulin IgG Test
| Field | Value |
|---|---|
| Also Known As | Immunoglobulin G, Total IgG, Quantitative IgG, IgG Serum Test, IgG Antibody Test |
| Sample Type | Serum (venous blood) |
| Fasting Required | No fasting required |
| Report Time | 3 days |
| Recommended For | All ages and genders (reference ranges vary by age) |
| Price | Starting at ₹500 |
What Is an Immunoglobulin IgG Test?
The Immunoglobulin IgG test measures the level of IgG antibodies in your blood. IgG is the most abundant antibody in the body, making up around 75% of all blood antibodies. It plays a key role in long-term immune protection against infections. Also known as the IgG serum test or quantitative IgG, this test uses a serum sample drawn from a vein in your arm.
What Does an Immunoglobulin IgG Test Measure?
The Immunoglobulin IgG antibody test measures the total amount of IgG antibody in your blood. IgG antibodies are produced by your immune system in response to specific germs. They provide long-term immune memory, allowing your body to respond quickly if it encounters the same pathogen again.
Why Is an Immunoglobulin IgG Test Done?
Doctors order an IgG test when they need to assess how well your immune system is functioning or to look into unexplained or repeated infections.
Common Symptoms That May Require This Test
The following symptoms may prompt your doctor to request this test:
- Frequent or recurring infections, particularly caused by the same germ
- Repeated sinus, throat, or ear infections
- Respiratory infections such as pneumonia or bronchitis
- Persistent diarrhoea or gastrointestinal infections
- Unusually slow recovery from illness
- Prolonged fatigue with no clear cause
Conditions This Test Can Help Detect
This test can help identify abnormal IgG levels that may be associated with a range of conditions, including:
- Primary immunodeficiency disorders (conditions where the immune system does not work properly from birth)
- Secondary immune insufficiencies linked to cancers such as lymphatic leukaemia, multiple myeloma, or Waldenström's disease
- Autoimmune disorders such as rheumatoid arthritis and lupus, where the immune system attacks the body's own tissues
- Liver diseases including hepatitis and cirrhosis
- Connective tissue diseases and chronic infections
Immunoglobulin IgG Test for Chronic Disease Monitoring
IgG measurement is included in standard protocols for investigating patients with recurrent infections and lung diseases. Regular monitoring helps track whether an antibody deficiency is temporary or permanent, and whether it is becoming more severe over time. For patients receiving immunoglobulin replacement therapy, IgG levels are checked routinely to confirm that treatment is providing adequate immune protection.
How to Prepare and What to Expect
No special preparation is needed for this test. The Immunoglobulin IgG test procedure is straightforward and takes only a few minutes.
Do You Need to Fast?
No, fasting is not required before this test. You can eat and drink normally on the day of collection. If you are having other tests alongside this one, check with your doctor whether any of those require fasting.
Practical Tips Before Your Test
Here are a few things to keep in mind before your sample is collected:
- Bring a detailed clinical history, including your symptoms, previous test results, and any relevant family history, as this is required for the test.
- Inform your doctor or phlebotomist about all medications you are currently taking, especially immunosuppressants, corticosteroids, anti-seizure drugs, or chemotherapy drugs.
- Inform your doctor about any recent vaccinations or infections, as these can affect your results.
- Do not stop any medication unless your doctor advises you to do so.
- Stay well hydrated, as this makes it easier to draw blood.
Step-by-Step Procedure
The blood sample for this test is collected using a simple, routine process:
- An elastic band (tourniquet) is tied around your upper arm to make the vein visible.
- The skin at the collection site is cleaned with an antiseptic.
- A small needle is inserted into a vein, usually in the inner elbow, to draw blood (venepuncture).
- About 3 ml of blood is collected into a sterile yellow-top tube.
- The needle is removed, and a small bandage is applied to the site.
- The sample is stored under refrigeration and sent to the laboratory for testing.
Factors That Can Affect Accuracy
Certain conditions and substances can influence the accuracy of your IgG test result. These include:
- Medications such as B-cell targeted therapies (e.g., rituximab), immunosuppressants, certain antipsychotics, and antiepileptic drugs
- Lipemic (very fatty) blood samples, which can interfere with the test method used
- Turbidity or visible particles in the blood specimen
- Recent vaccinations or active infections
- Underlying conditions such as HIV, cancer, or kidney disease, which can alter antibody production
- Dehydration at the time of sample collection
Understanding Your Immunoglobulin IgG Test Results
Your results show the total amount of IgG antibody in your blood. A doctor will review these figures alongside your symptoms and medical history. The table below shows age-wise reference ranges.
| Age Group | Normal Range (mg/dL) |
|---|---|
| Adults (above 19 years) | 600 to 1600 |
| Children (below 18 years) | Varies (Lower in babies and infants) |
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
Several factors can shift IgG levels even in otherwise healthy people.
- Medications such as B-cell targeted therapies, immunosuppressants, and certain antiepileptic drugs can lower IgG levels and may not necessarily reflect an underlying immune disorder.
- Low level does not always mean an immune deficiency; it may also reflect kidney or gastrointestinal conditions, cancer, or severe burns. Patients with low albumin levels may also show reduced IgG.
Always inform your doctor about your full medical history before drawing conclusions from your results.
How to Maintain Healthy Levels
These general wellness habits support a well-functioning immune system:
- Eat a balanced diet with adequate protein, vitamins, and minerals that support immune health.
- Get sufficient sleep and manage day-to-day stress, as both affect immune function.
- Keep your vaccinations up to date as advised by your doctor.
Lupin Diagnostics Immunoglobulin IgG Test Price and Home Collection
The Immunoglobulin IgG test cost at Lupin Diagnostics starts at ₹500, and home sample collection is available across cities. The table below shows indicative prices in key cities.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 390 |
| CHENNAI | 500 |
| HYDERABAD | 500 |
| KOLKATA | 390 |
| NAVI MUMBAI | 500 |
| PUNE | 500 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
Home Collection
Immunoglobulin IgG test home collection is available across multiple cities. A trained phlebotomist will visit your home at your chosen time to collect the blood sample. All samples are processed in NABL-accredited laboratories, and your digital report is accessible via email or WhatsApp once ready.
How to Book
Booking your Immunoglobulin IgG test online is simple:
- 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.
Frequently Asked Questions
The Immunoglobulin IgG test is used to assess the health of your immune system. It helps doctors investigate frequent infections, suspected immune deficiencies, autoimmune disorders, and certain blood or liver conditions. It may also be used to monitor ongoing treatment for immune deficiencies.
No fasting is required. You can eat and drink as normal before your sample is collected. If other tests have been ordered at the same time, check with your doctor whether those require any preparation.
A low Immunoglobulin IgG test level indicates reduced antibody production, which may weaken immune defence and increase susceptibility to infections. Causes include primary immunodeficiency disorders, immunosuppressive medications, kidney or gastrointestinal protein loss, or blood cancers affecting antibody production. Temporary factors like recent infections or dehydration may also lower levels. Clinical interpretation with history and additional tests is essential.
Elevated IgG levels may be associated with liver diseases such as hepatitis or cirrhosis, autoimmune disorders, chronic or long-standing infections, connective tissue diseases, or plasma cell disorders like multiple myeloma. Interpretation requires correlation with symptoms, medical history, and other laboratory findings to determine the underlying cause accurately.
Yes. Several medicines can raise or lower IgG levels, including rituximab, methotrexate, azathioprine, corticosteroids, certain antipsychotics, and antiepileptic drugs such as phenytoin and carbamazepine. Always tell your doctor about every medicine you are taking before the test.
IgG levels can be affected by a range of underlying conditions and medicines, including immunosuppressants and chronic illnesses. Providing a detailed clinical history enables your doctor and the laboratory to interpret results accurately in the correct context, ensuring a more reliable and clinically meaningful assessment of immune function.
Yes, Immunoglobulin IgG test home collection is available. A certified phlebotomist will come to your home to collect the blood sample at a time convenient for you. The sample is then processed in an NABL-accredited Lupin Diagnostics laboratory.
Immunoglobulin IgG Test: Booking, Price, and Results
