Immunoglobulin G (IgG) Test
Detect Chronic Infections And Assess Immune System Health
Disease.
General Wellbeing Tests
Department.
Immunology
TAT.
6 – 9 Days
Sample Type
- 2 mL (1 mL min.) serum from 1 SST.
What Is An Immunoglobulin G Test?
IgG is the most abundant type of antibody, playing a crucial role in long-term immunity by fighting bacterial and viral infections. Immunoglobulin G (IgG) test measures the levels of IgG antibodies in the blood. This test helps diagnose immune deficiencies, chronic infections, autoimmune diseases (like lupus or rheumatoid arthritis) and certain cancers (such as multiple myeloma).
Doctors may recommend this test if a patient has frequent infections, unexplained inflammation or symptoms of an autoimmune disorder. It can also monitor treatment effectiveness in immune-related conditions. Since IgG antibodies persist longer than other immunoglobulins, they provide insight into past infections or vaccination responses.
How is the Test Performed?
Sample Collection
A blood sample is taken from a vein in the arm.
Testing Process
The sample is sent to a lab, where techniques like nephelometry or enzyme-linked immunosorbent assay (ELISA) measure IgG levels.
Preparation
Fasting is usually not required, but patients should inform their doctor about any medications that may affect results.
Results
Reported as positive/negative for HPV, with strain-specific details if detected in 3 to 5 days.
What are the symptoms that prompt this test?
Common Symptoms in Adults
- Frequent or severe infections (bacterial, viral)
- Chronic fatigue or weakness
- Unexplained weight loss
- Swollen lymph nodes
- Autoimmune disorder symptoms (joint pain, rashes)
Symptoms in Children
- Recurrent ear or respiratory infections
- Delayed growth or development
- Digestive issues (chronic diarrhea)
- Increased susceptibility to infections
- Poor response to vaccines
- Chronic inflammatory conditions
What are Normal Ranges for This Test?
Normal IgG levels (may vary slightly depending on laboratory reference):
Normal Levels 700 to 1600 mg/dL
** Normal levels are dependent on a number of factors including age, gender, testing method and health condition of patient etc. Result interpretation should be done by a qualified doctor or healthcare professional.**
What Happens if Test Results Show Abnormal Levels?
High IgG Levels – May indicate chronic infection, autoimmune disease, or certain cancers. Further tests like protein electrophoresis or bone marrow biopsy may be needed.
Low IgG Levels – Suggests weakened immunity (e.g., hypogammaglobulinemia). Doctors may recommend vaccine response tests or genetic testing for immune disorders.
Follow-Up – Treatment depends on the cause—immunoglobulin replacement therapy for deficiencies, immunosuppressants for autoimmune conditions, or antibiotics for infections.
Additional Information About Immunoglobulin G Test
When to Seek Medical Attention
If experiencing recurrent infections, unexplained fatigue or autoimmune symptoms.
Related Tests
- IgA
- IgM tests
- Complete blood count (CBC)
- Autoimmune panels.
Conditions Affecting Results
- Medications such as steroids chemotherapy
- Recent Infections
- Pregnancy
Why Choose Genex?
State Of The Art Technology
We use advanced technology and equipment to ensure precise and reliable results. Our cutting-edge tools and methodologies guarantee the highest standards of lab testing.
Highly Skilled Team
Our team consists of skilled technicians trained to handle complex hormonal tests with high accuracy. Each member has years of experience & specialized knowledge to every test.
Fast Turnaround Time
Get your results quickly, helping to make timely decisions regarding your health. We understand the importance of prompt information for effective health management.
Patient-Centered Care
Genex Lab prioritizes your comfort and satisfaction throughout the testing process. Our compassionate approach ensures a supportive and reassuring experience for patients.
Frequently Asked Lab Tests
- Lipid Profile
- Liver Function Test
- Kidney Function Test
- Thyroid Profile
- Urine Analysis
- Electrolytes
- Complete Blood Count (CBC)
- CRP
- ESR