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Immunoelectrophoresis – blood

Definition

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. Some immunoglobulins can be abnormal and may be due to some types of cancer.

Immunoglobulins can also be measured in the urine.

How the Test is Performed

A blood sample is needed.

How to Prepare for the Test

There is no special preparation for this test.

How the Test will Feel

When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or slight bruising. This soon goes away.

Why the Test is Performed

This test is most often used to check the types and amounts of immunoglobulins when certain cancers and other disorders are present or suspected.

Normal Results

A normal (negative) result means that the blood sample had normal types and amounts of immunoglobulins. The level of one immunoglobulin was not higher than any other.

What Abnormal Results Mean

Abnormal results may be due to:

• Amyloidosis (buildup of abnormal proteins in tissues and organs)

• Leukemia (cancer of the bone marrow)

• Waldenström macroglobulinemia (a type of lymphoma)

• Lymphoma (cancer of the lymph tissue)

• Monoclonal gammopathy of unknown significance (MGUS, a type of blood disorder)

• Multiple myeloma (a type of blood cancer)

• Other cancers

• Infection

Risks

There is little risk involved with having your blood taken. Veins and arteries vary in size from one person to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others.

Other risks associated with having blood drawn are slight, but may include:

• Excessive bleeding

• Fainting or feeling lightheaded

• Multiple punctures to locate veins

• Hematoma (blood accumulating under the skin)

• Infection (a slight risk any time the skin is broken)

References

Gertz MA, Dispenzieri A. Amyloidosis. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 174.

McPherson RA. Specific proteins. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24th ed. Philadelphia, PA: Elsevier; 2022:chap 20.

Rajkumar SV, Dispenzieri A. Multiple myeloma and related disorders. In: Niederhuber JE, Armitage JO, Kastan MB, Doroshow JH, Tepper JE, eds. Abeloff's Clinical Oncology. 6th ed. Philadelphia, PA: Elsevier; 2020:chap 101.

Review Date: 6/17/2024

Reviewed By: Todd Gersten, MD, Hematology/Oncology, Florida Cancer Specialists & Research Institute, Wellington, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.