N
The Daily Insight

What is a immunoelectrophoresis test

Author

Sarah Silva

Updated on April 04, 2026

Serum immunoelectrophoresis is a lab test that measures proteins called immunoglobulins in the blood. Immunoglobulins are proteins that function as antibodies, which fight infection. There are many types of immunoglobulins that fight different types of infections.

What can immunoelectrophoresis diagnose?

  • Multiple myeloma (a type of blood cancer)
  • Chronic lymphocytic leukemia or Waldenström macroglobulinemia (types of white blood cell cancers)
  • Amyloidosis (buildup of abnormal proteins in tissues and organs)
  • Lymphoma (cancer of the lymph tissue)
  • Kidney failure.
  • Infection.

How is immunoelectrophoresis performed?

Immunoelectrophoresis refers to precipitation in agar under an electric field. It is a process of a combination of immuno-diffusion and electrophoresis. … The antibodies diffuse laterally to meet diffusing antigens, and lattice formation and precipitation occur permitting determination of the nature of the antigens.

Why is immunoelectrophoresis used?

The method is mainly used clinically to determine the blood levels of immunoglobulins, and aids in the diagnosis and evaluation of the therapeutic response in many disease states affecting the immune system and also in the diagnosis of multiple myeloma. A similar technique is called rocket immunoelectrophoresis.

Why is protein electrophoresis done?

Protein electrophoresis is used to identify and measure the presence of abnormal proteins, the absence of normal proteins, and/or to detect various protein electrophoresis patterns associated with certain conditions, as found in blood, urine or other body fluids.

How is immunoelectrophoresis different from electrophoresis?

is that electrophoresis is the migration of electrically charged molecules through a medium under the influence of an electric field while immunoelectrophoresis is a technique, using a combination of protein electrophoresis and an antigen-antibody interaction to separate mixtures of proteins and identify them.

Is immunoelectrophoresis a blood test?

Serum immunoelectrophoresis is a lab test that measures proteins called immunoglobulins in the blood. Immunoglobulins are proteins that function as antibodies, which fight infection. There are many types of immunoglobulins that fight different types of infections.

What is the normal range of IgG?

Reference range/units Normal Ranges Adult: IgG 6.0 – 16.0g/L. IgA 0.8 – 3.0g/L. IgM 0.4 – 2.5g/L.

Why is immunoglobulin test ordered?

An immunoglobulins blood test may be used to help diagnose a variety of conditions, including: Bacterial or viral infections. Immunodeficiency, a condition that reduces the body’s ability to fight infections and other diseases. An autoimmune disorder, such as rheumatoid arthritis or lupus.

How do you test for immune globulin?

Doctors often measure IgA, IgG, and IgM together to get a snapshot of your immune function. A lab tech will usually take a sample of your blood by inserting a needle into a vein in your arm. The blood collects into a tube or vial. Another way to do this test is with a sample of what’s called cerebrospinal fluid (CSF).

Article first time published on

Which buffer is used in immunoelectrophoresis?

Agarose as 1% gel slabs of about 1 mm thickness buffered at high pH (around 8.6) is traditionally preferred for electrophoresis and the reaction with antibodies.

Should I be worried about high protein in blood?

High blood protein is not a specific disease or condition in itself, but it might indicate you have a disease. High blood protein rarely causes signs or symptoms on its own. But sometimes it is uncovered while you’re having blood tests done as part of an evaluation for some other problem or symptom.

What causes high protein electrophoresis?

Increased gamma globulin proteins may indicate: Blood cancers, including multiple myeloma, Waldenström macroglobulinemia, lymphomas, and chronic lymphocytic leukemias. Chronic inflammatory disease (for example, rheumatoid arthritis) Acute infection.

What does a monoclonal spike mean?

A monoclonal spike (M spike or paraprotein) on serum protein electrophoresis (SPEP) is a frequent finding in the general population and typically is pathognomonic of an asymptomatic, premalignant condition called monoclonal gammopathy of undetermined significance (MGUS).

What is IEP urine?

Urine immunoelectrophoresis is a lab test that measures immunoglobulins in a urine sample. Immunoglobulins are proteins that function as antibodies , which fight infection. There are various types of these proteins that fight different types of infections. Some immunoglobulins can be abnormal and may be due to cancer.

What is the difference between serum protein electrophoresis and Immunofixation?

Serum protein electrophoresis (SPEP) is used to determine the type of each protein present and may indicate a characteristic curve (ie, where the spike is observed). … Immunofixation is used to identify the subtype of protein (ie, IgA lambda).

What is meant by immunoglobulin?

Immunoglobulin: A protein produced by plasma cells and lymphocytes and characteristic of these types of cells. Immunoglobulins play an essential role in the body’s immune system. They attach to foreign substances, such as bacteria, and assist in destroying them. Immunoglobulin is abbreviated Ig.

What causes low IgE levels?

The first, defined here as low IgE type 1, is associated with antibody deficiency (low IgG and IgA) and susceptibility to infection and/or autoimmunity. If a secondary cause of antibody deficiency is unlikely, these patients are often diagnosed as common variable immunodeficiency (CVID).

What is a immunoglobulins blood test used for?

What Is an Immunoglobulin Test? An immunoglobulin (im-yeh-no-GLOB-yeh-len) test measures the level of types of antibodies in the blood. The immune system makes antibodies to protect the body from bacteria, viruses, and allergens.

What does it mean when IgA is low?

Having an IgA deficiency means that you have low levels of or no IgA in your blood. IgA is found in mucous membranes, mainly in the respiratory and digestive tracts. It is also found saliva, tears, and breastmilk. A deficiency seems to play a part in asthma and allergies.

What do IgG test results mean?

IgG. High levels of IgG may mean a long-term (chronic) infection, such as HIV, is present. Levels of IgG also get higher in IgG multiple myeloma, long-term hepatitis, and multiple sclerosis (MS).

What is a high level of IgG antibodies Covid?

≥ 1.4: This is a positive result and has a high likelihood of prior infection. Some patients with past infections may not have experienced symptoms. It is unclear at this time if a positive IgG infers immunity against future COVID-19 infection.

What does Covid 19 IgG positive mean?

The presence of IgG suggests that the infection happened weeks to months in the past. It also suggests that you may no longer be infectious. IgG indicates that you may have some immunity to the virus, though you may not.

What does it mean if IgM is positive?

The presence of IgM suggests that the infection or vaccination happened recently. How much IgM antibodies might protect you from getting sick with COVID-19 in the future is unknown.

Does IgM mean active infection?

When IgM antibodies are present, they can indicate that a patient has an active or recent infection with SARS- CoV-2. IgG antibodies develop later following infection, and generally do not begin to appear until 7 – 10 days after infection.

Is low IgM serious?

Low Immunoglobulin M Low levels of IgM may mean your immune system is not working optimally. Because this antibody helps provide protection against bacteria and viruses, having low IgM levels has been associated with a higher risk of recurring infections [8].

What is Rocket immunoelectrophoresis?

Rocket immunoelectrophoresis (also referred to as electroimmunoassay) is a simple, quick, and reproducible method for determining the concentration of a specific protein in a protein mixture.

What is Immunofixation?

Serum immunofixation. The immunofixation blood test is used to identify proteins called immunoglobulins in blood. Too much of the same immunoglobulin is usually due to different types of blood cancer. Immunoglobulins are antibodies that help your body fight infection.

What is zone electrophoresis?

Zone electrophoresis (ZE) is an electrophoretic separation technique typically used for analyzing proteins, nucleic acids, and biopolymers. During the process, different species in a sample are transported in a continuous electrolyte buffer system, subject to a potential gradient.

What cancers cause high protein in blood?

In multiple myeloma, cancerous plasma cells accumulate in the bone marrow and crowd out healthy blood cells. Rather than produce helpful antibodies, the cancer cells produce abnormal proteins that can cause complications.

What infections cause high protein in blood?

  • Dehydration.
  • Chronic (long-term) inflammation or inflammatory disorders.
  • Infections caused by viruses, such as hepatitis B, hepatitis C or HIV/AIDS.
  • Certain cancers, like multiple myeloma, sarcoidosis and Waldenstrom macroglobulinemia.
  • Severe liver or kidney disease.