Immunoglobulins A, M, and G
immunoglobulin test · IgA IgM IgG · immune system blood test · total antibodies test
This blood test shows how much of the three main types of antibodies you have. They protect you from infections.
For frequent or severe infections, when an immune problem is suspected, and for liver, blood, and joint conditions.
⏱ Duration: the blood draw usually takes 5 minutes; results usually come in 1 to 3 days
Be sure to tell your doctor
How to prepare
- Food. It is usually better on an empty stomach or 4 hours after eating. Water is fine. Check with the lab.
- Your health. If you have an acute infection now, ask your doctor if the test should be moved.
- Medicines. Do not stop anything on your own. Tell your doctor what you take.
What to bring
- Your referral
- Past test results, if any
How it goes
- You sit down, and a band is tied above your elbow
- The skin is wiped with antiseptic
- Blood is taken from a vein into a tube
- The band is removed, and a cotton pad is pressed on the spot
What you'll feel
- A quick prick, like a pinch
- Sometimes slight dizziness. Tell the nurse, and they will help you lie down
Afterwards
- Press the cotton pad for 3 to 5 minutes
- Results usually come in 1 to 3 days
- The doctor will read the result based on your age and health conditions
Common questions
Do low immunoglobulins mean immunodeficiency?
Not always. Drops can be temporary. The doctor makes a diagnosis from the tests and how you get sick.
Can vitamins raise immunoglobulins?
No. If they really are low, your doctor will choose treatment.