An immunoglobulins test is done to measure
the level of immunoglobulins, also known as
antibodies, in your blood.
substances made by the body's
immune system in response to bacteria, viruses,
fungus, animal dander, or cancer cells. Antibodies attach to the foreign
substances so the immune system can destroy them.
Antibodies are specific to each type of foreign
substance. For example, antibodies made in response to a
tuberculosis infection attach only to tuberculosis
bacteria. Antibodies also work in allergic reactions. Occasionally, antibodies
may be made against your own tissues. This is called an
If your immune system makes low levels of antibodies, you may have a greater chance of
developing repeated infections. You can be born with an immune system that
makes low levels of antibodies, or your system may make low levels of
antibodies in response to certain diseases, such as cancer.
five major types of antibodies are:
The levels of each type of antibody can give your
doctor information about the cause of a medical problem.
A test for immunoglobulins (antibodies)
in the blood is done to:
This test is often done when the results of a blood protein
electrophoresis or total blood protein test are abnormal.
You do not need to do anything before
you have this test.
The health professional drawing blood
The blood sample is taken from a vein in
your arm. An elastic band is wrapped around your upper arm. It may feel tight.
You may feel nothing at all from the needle, or you may feel a quick sting or
There is very little chance of a problem from
having a blood sample taken from a vein.
An immunoglobulins test is done to
measure the level of immunoglobulins, also known as
antibodies, in your blood.
The normal values listed here-called a reference range-are just a guide. These ranges vary from lab to lab, and your lab may have a different range for what's normal. Your lab report should contain the range your lab uses. Also, your doctor will evaluate your results based on your health and other factors. This means that a value that falls outside the normal values listed here may still be normal for you or your lab.
results listed below are normal values for adults. Children have different
values than adults. Results are ready in several days.
milligrams per deciliter (mg/dL) or 600-4,000 milligrams per liter (mg/L)
700-1,500 mg/dL or 7.0-15.0 grams per liter (g/L)
60-300 mg/dL or 600-3,000 mg/L
0-14 mg/dL or 0-140 mg/L
3-423 international units per milliliter (IU/mL) or 3-423 kilo-international units per liter (kIU/L)
Reasons you may not be able to
have the test or why the results may not be helpful include:
CitationsFischbach FT, Dunning MB III, eds. (2009). Manual of Laboratory and Diagnostic Tests, 8th ed. Philadelphia: Lippincott Williams and Wilkins.Other Works ConsultedChernecky CC, Berger BJ (2008). Laboratory Tests and Diagnostic Procedures, 5th ed. St. Louis: Saunders.Fischbach FT, Dunning MB III, eds. (2009). Manual of Laboratory and Diagnostic Tests, 8th ed. Philadelphia: Lippincott Williams and Wilkins.Pagana KD, Pagana TJ (2010). Mosby's Manual of Diagnostic and Laboratory Tests, 4th ed. St. Louis: Mosby Elsevier.
ByHealthwise StaffPrimary Medical ReviewerE. Gregory Thompson, MD - Internal MedicineAdam Husney, MD - Family MedicineSpecialist Medical ReviewerMartin J. Gabica, MD - Family Medicine
Current as ofOctober 14, 2016
Current as of:
October 14, 2016
E. Gregory Thompson, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine
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Last modified on: 8 September 2017