Beta-2 Microglobulin, Serum

Also referred as

B2M Serum test

Beta-2-M Serum test

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The Beta-2 Microglobulin, Serum test is a blood test that measures the concentration of beta-2-microglobulin in the blood, a protein found on the surface of most cells. It is primarily used as a tumor marker to evaluate disease severity and prognosis in multiple myeloma (a type of blood cancer) and certain other blood-related disorders.

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Understanding Beta-2 Microglobulin, Serum

Beta-2-microglobulin (B2M) is a small protein present on the surface of most nucleated cells and is shed into the bloodstream during normal cell turnover. Its levels rise in conditions involving increased cell destruction, immune system activation, or impaired kidney function. Measuring B2M in the blood helps assess disease activity and progression, especially in hematologic cancers like multiple myeloma and lymphomas.

The Beta-2 Microglobulin, Serum test may be recommended for individuals suspected of having multiple myeloma or other hematologic conditions, as well as for patients with diagnosed multiple myeloma to track disease progression and response to therapy. It can also help assess kidney function in certain medical conditions.

Overnight fasting is preferred for this test, but it is not mandatory. Inform your doctor about all the medications and supplements that you are currently taking, as these may affect the test results.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Do not self-medicate, and always consult a doctor to understand the test results correctly.

What does Beta-2 Microglobulin, Serum measure?

The Beta-2 Microglobulin, Serum test measures the concentration of beta-2-microglobulin in the blood. B2M levels provide insight into both cellular activity and how effectively the kidneys are clearing proteins from the blood. High levels may indicate advanced stages of multiple myeloma, chronic lymphocytic leukemia, kidney disease, or other disorders affecting the immune system. Elevated B2M levels are often associated with poorer prognosis and can guide more aggressive treatment strategies. Low or normal levels typically indicate healthy kidney function and no significant increase in cell turnover from malignancy or immune activation.

By measuring serum B2M, doctors can evaluate disease progression, monitor treatment response, and support diagnosis and prognosis planning for blood cancers and related disorders.

Test Information is reviewed by: Dr. Swati Gupta (Anand), MBBS, MD Lab Medicine and written by Dr. Lipika Khurana, BDS, PGDHHM . The test details are for information purpose only. Consult a doctor before taking any test. Last updated on: 20th Sep 2026

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Beta-2 Microglobulin, Serum test price for other cities

Price in	New Delhi	Rs. 1379
Price in	Kolkata	Rs. 1259
Price in	Chennai	Rs. 1060
Price in	Mumbai	Rs. 1599
Price in	Hyderabad	Rs. 1330

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FAQs related to Beta-2 Microglobulin, Serum

What is the Beta-2 Microglobulin, Serum test?

The Beta-2 Microglobulin, Serum test is a blood test that measures the levels of beta-2-microglobulin (B2M) in the bloodstream. It helps assess kidney function, monitor immune system activity, and evaluate prognosis in conditions like multiple myeloma.

Why is the Beta-2 Microglobulin, Serum test done?

This test is done to assess disease severity and prognosis in multiple myeloma, monitor treatment response and disease progression in blood-related disorders, evaluate kidney function in certain conditions, and aid in diagnosing lymphoproliferative or immune-related disorders.

Who should take the Beta-2 Microglobulin, Serum test?

Individuals suspected of having multiple myeloma or other blood cancers, patients already diagnosed with multiple myeloma to monitor disease progression and treatment effectiveness, and individuals with kidney dysfunction or immune-related disorders, as advised by their doctor, should take this test.

How is the test performed?

The test is performed by drawing a small blood sample from a vein, usually in the arm, which is then sent to the laboratory for analysis.

Are there any risks associated with the test?

The Beta-2-Microglobulin test is a standard blood test with minimal risk, though some people may experience slight bruising or discomfort at the site of blood draw.

How often should this test be performed?

The frequency depends on the medical condition. Patients undergoing treatment for multiple myeloma may have this test periodically to monitor disease progression, while individuals being evaluated for kidney or immune function may have it as recommended by their doctor.

What do abnormal results indicate?

High B2M levels may suggest advanced multiple myeloma, chronic lymphocytic leukemia, kidney dysfunction, or increased immune cell activity, while normal or low levels usually indicate healthy kidney function and no significant abnormal cell turnover.

What should I do if my results are abnormal?

Abnormal results do not confirm a specific disease. Your doctor will interpret the results in the context of your overall health, symptoms, and other test findings to determine the next steps.

How does Tata 1mg ensure accurate lab test results?

Tata 1mg ensures accurate lab test results through certified laboratories that use advanced technology and adhere to stringent quality control measures. This commitment to high standards guarantees reliable results.

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