ANA HEP-2 (Antinuclear Antibodies HEP-2)

At IntroLab in Belgrade, we are committed to offering essential diagnostic services, including the ANA HEP-2 (Antinuclear Antibodies HEP-2) test. This test is vital for diagnosing specific autoimmune diseases, providing crucial information for an accurate diagnosis and appropriate treatment.

What are Antinuclear Antibodies (ANA)?

Antinuclear antibodies (ANA) are a type of autoantibody mistakenly produced by the immune system to attack the body’s own structures.

Normally, the immune system produces antibodies in response to foreign substances called antigens, such as viruses and bacteria. These antibodies help protect the body by recognizing, binding to, and eliminating foreign bodies or pathogens.

However, sometimes the immune system makes an error and starts producing autoantibodies. These autoantibodies incorrectly identify the body’s own cells, tissues, or substances as foreign and initiate an immune response against them. This can lead to various autoimmune diseases, such as systemic lupus erythematosus, rheumatoid arthritis, or Hashimoto’s thyroiditis, as the autoantibodies attack and damage the body’s own tissues.

Antinuclear antibodies are a specific type of autoantibody that targets components within the nucleus of the body’s own cells. These antibodies are common in people with certain autoimmune diseases, although a small amount can normally be present in the body. Elevated levels of ANA antibodies often indicate the presence of autoimmune diseases, making ANA antibody testing an important diagnostic tool for these conditions.

When is the ANA HEP-2 (Antinuclear Antibodies HEP-2) test performed?

The ANA HEP-2 (Antinuclear Antibodies HEP-2) test is used when there is a suspicion of systemic autoimmune diseases. These diseases include, but are not limited to:

• Systemic Lupus Erythematosus (SLE): A chronic autoimmune disease that can affect nearly every organ in the body. It often includes symptoms such as fatigue, joint pain, and skin rashes.
• Rheumatoid Arthritis (RA): A chronic inflammatory disease that primarily affects the joints but can also impact other parts of the body.
• Sjögren’s Syndrome: A chronic autoimmune disease characterized by dry eyes and mouth. It can also affect other organs and systems.
• Scleroderma (Systemic Sclerosis): A chronic autoimmune disease resulting in the thickening and hardening of the skin, which can also affect internal organs.
• Polymyositis and Dermatomyositis: A group of diseases characterized by muscle inflammation and weakness.
• Mixed Connective Tissue Disease (MCTD): An autoimmune disease that combines symptoms and characteristics of multiple connective tissue diseases, including SLE, scleroderma, and polymyositis.
• Autoimmune Hepatitis: A disease where the immune system attacks liver cells, causing inflammation and damage.

A doctor may recommend the ANA HEP-2 test if a patient exhibits symptoms such as:

• Fatigue
• Joint pain
• Skin rashes
• Fever

How is the test performed?

The test is conducted using a blood sample from the patient. Once the blood is drawn, an indirect immunofluorescence (IIF) test is carried out on HEP-2 cells. The test results can reveal the presence and concentration of antinuclear antibodies, as well as specific fluorescence patterns that may indicate particular diseases.

Specifics and subtypes of the test

The ANA HEP-2 (Antinuclear Antibody HEP-2) test includes various subtypes, each designed to detect specific proteins within the cell nucleus. For example, it can test for antibodies against histones, DNA, RNP, Ro, La, Scl-70, and others. Identifying these specific antibodies helps in more accurately diagnosing diseases.

Occasionally, test results may show false positives, indicating the presence of antibodies even though the patient does not have an autoimmune disease. This can occur due to infections, certain medications, or in older individuals.