Quantitative POCT Total IgG/IgE
Does this test have other names?
IgA, IgE, IgG, IgM; immunology tests
What is this test?
This test measures the number of antibodies called immunoglobulins in your blood. Your immune system produces antibodies to fight bacteria, viruses, and other invaders that could harm your health. Your body makes several types of immunoglobulins or antibodies. They are called IgM, IgG, IgA, and IgE.
- IgG is found in your blood and tissues.
- IgM is mainly found in your blood.
- IgA is found at high levels in the fluid produced by mucous membranes, such as saliva, tears, and nasal secretions.
- IgE mainly attaches itself to cells of the immune system in the blood.
Some people are deficient in one or more of these immunoglobulins, putting them at risk for infections.
Why do I need this test?
You may need this test if your healthcare provider suspects that you have an immune globulin deficiency. Symptoms of an IgG, IgA, or IgM deficiency include frequent or severe infections such as:
- Ear infections
- Viral lung infections
In children, this deficiency can cause poor growth and stunting.
What other tests could I have in conjunction with this test?
Your healthcare provider may recommend other tests, such as:
- Complete blood count (CBC), including measuring the number of certain cells in your blood
- Measurement of different proteins in your blood.
- Urinalysis to check for kidney problems
- Tests to detect other conditions that may affect your immune systems, such as kidney disease and diabetes.
What do my test results mean?
Test results may vary based on your age, gender, medical history, the method used for the test, and other things. Your test results may not mean you have a problem. Ask your healthcare provider what your test results mean to you. Results may show low levels of one or more immunoglobulins. Depending on the specific type, it may mean that you have one of these problems:
- Common variable immunodeficiency. This is a condition that causes the immune system to malfunction. It often appears in young adults, but can be diagnosed in children. It is marked by low levels of IgG.
- Ataxia telangiectasia. This is a rare genetic disorder that causes the immune system to break down. It tends to be disabling and fatal when people reach their 20s.
- Multiple myeloma and certain types of leukaemia, which are types of cancer.
- Certain autoimmune diseases, such as lupus, rheumatoid arthritis, and Hashimoto’s thyroiditis
How is this test done?
The test is done on a blood sample. A needle is used to draw blood from a vein in your arm or hand.
Does this test present any risks?
Getting a blood test with a needle carries some risks. These include bleeding, infection, bruising, and feeling dizzy. When the needle sticks your arm or hand, you may feel a slight sting or pain. Afterwards, the site may be sore.
What could affect my test results?
No other factors can affect your test results.
How do I prepare for this test?
You do not need to prepare for this test. Make sure your healthcare provider knows all the medicines, herbs, vitamins, and supplements you are taking. This includes medications that do not need a prescription and any illegal drugs that you may use.