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Serum globulin electrophoresis

Globulin electrophoresis; Waldenstrom - serum globulin

 

The serum globulin electrophoresis test measures the levels of proteins called globulins in the fluid part of a blood sample. This fluid is called serum.

How the Test is Performed

 

A blood sample is needed.

In the lab, the technician places the blood sample on special paper and applies an electric current. The proteins move on the paper and form bands that show the amount of each protein.

 

How to Prepare for the Test

 

You may be asked not to eat or drink (fast) for 4 hours before this test.

Certain medicines may affect the results of this test. Your health care provider will tell you if you need to stop taking any medicines. Do not stop any medicine before talking to your provider.

Medicines that can affect the test results include:

  • Chlorpromazine
  • Corticosteroids
  • Phenacemide
  • Salicylates
  • Some kinds of antibiotics
  • Tolbutamide

 

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 a slight bruise. This soon goes away.

 

Why the Test is Performed

 

This test is done to look at globulin proteins in the blood. Identifying the types of globulins can help diagnose certain medical problems.

Globulins are roughly divided into 3 groups: alpha, beta, and gamma globulins. Gamma globulines include various types of antibodies such as immunoglobulins (Ig) M, G, and A.

Certain diseases are associated with producing too many immunoglobulins. For example, Waldenstrom macroglobulinemia is a cancer of certain white blood cells. It is linked with producing too many IgM antibodies.

 

Normal Results

 

Normal value ranges are:

  • Serum globulin: 2.0 to 3.5 grams per deciliter (g/dL) or 20 to 35 grams per liter (g/L) 
  • IgM component: 75 to 300 milligrams per deciliter (mg/dL) or 750 to 3000 milligrams per liter (mg/L)
  • IgG component: 650 to 1850 mg/dL or 6.5 to 18.50 g/L
  • IgA component: 90 to 350 mg/dL or 900 to 3500 mg/L

Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your provider about the meaning of your specific test results.

 

What Abnormal Results Mean

 

Increased gamma globulin proteins may indicate:

  • Acute infection
  • Bone marrow cancer called multiple myeloma
  • Chronic inflammatory disease (for example, rheumatoid arthritis and systemic lupus erythematosus)
  • Overactive immune system (hyperimmunization)
  • Waldenstrom macroglobulinemia

 

Risks

 

There is very little risk involved with having your blood taken. Veins and arteries vary in size from 1 person to another, and from 1 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
  • Hematoma (blood buildup under the skin)
  • Infection (a slight risk any time the skin is broken)

 

 

References

Dominiczak MH, Fraser WD. Blood and plasma proteins. In: Baynes JW, Dominiczak MH, eds. Medical Biochemistry. 4th ed. Philadelphia, PA: Elsevier Saunders; 2014:chap 4.

Rajkumar SV. Plasma cell disorders. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 187.

 
  • Blood test

    Blood test - illustration

    Blood is drawn from a vein (venipuncture), usually from the inside of the elbow or the back of the hand. A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. Preparation may vary depending on the specific test.

    Blood test

    illustration

    • Blood test

      Blood test - illustration

      Blood is drawn from a vein (venipuncture), usually from the inside of the elbow or the back of the hand. A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. Preparation may vary depending on the specific test.

      Blood test

      illustration

    A Closer Look

     

      Self Care

       

        Tests for Serum globulin electrophoresis

         

         

        Review Date: 2/11/2016

        Reviewed By: Todd Gersten, MD, Hematology/Oncology, Florida Cancer Specialists & Research Institute, Wellington, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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