Immunoglobulin IgG
How to prepare
You can eat and drink normally before the test.
No special preparation needed.
Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.
Wear a loose sleeve so the sample can be taken easily from your arm.
How it works
About this test
IgG is the most common antibody in blood and gives long-term protection against infections. This test measures its total level.
Why is this test done?
- Look into repeated infections
- Investigate raised blood protein
- Monitor immune deficiency treatment
Symptoms — when should you get tested?
- Frequent infections
- Slow healing
- Swollen glands
Normal range
Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.
If your result is high
High IgG is seen when the immune system is constantly active.
Common reasons- Chronic infections like TB or HIV
- Autoimmune disease
- Liver disease
- IgG myeloma
If your result is low
Low IgG raises the risk of bacterial infections.
Common reasons- Inherited immune deficiency
- Kidney or gut protein loss
- Blood cancers
- Immune-suppressing medicines
How is the test done?
- 1Book online
Choose your slot for home collection or a visit to our centre.
- 2Blood sample taken
A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.
- 3Tested in our lab
Your barcoded sample is tested on automated machines with strict quality checks.
- 4Report on WhatsApp
A pathologist checks the result and the report reaches you on WhatsApp and email.
Frequently asked questions
No fasting is needed for this test. You can eat and drink normally.
Your report is usually ready in same day after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.
Please call our team to confirm whether home sample collection is available for your location and test.
This test needs a blood sample. No special preparation needed.