Which of the following diagnostic tests is commonly used to assess immune function in individuals suspected of having an immunodeficiency disorder?

Explanation: The correct answer is b. Common variable immunodeficiency (CVID). CVID is a primary immunodeficiency disorder characterized by a reduced level of immunoglobulins, particularly IgA, leading to an increased susceptibility to infections.

Incorrect choices:

a. Severe combined immunodeficiency (SCID) is a more severe immunodeficiency disorder that affects multiple components of the immune system, not specifically IgA levels.

c. DiGeorge syndrome is caused by a genetic abnormality and is characterized by a defect in the development of certain organs, including the thymus and parathyroid glands. It may result in immune system abnormalities but does not primarily involve IgA deficiency.

d. Wiskott-Aldrich syndrome is a rare X-linked genetic disorder that affects platelet function and immune system regulation but is not specifically associated with IgA deficiency.

Explanation: The correct answer is a. Complete blood count (CBC) with differential. A CBC with differential is essential for monitoring the client's immune status and treatment response. It provides information about the client's white blood cell count, including different types of white blood cells, such as lymphocytes, which play a crucial role in the immune response.

Incorrect choices:

b. Blood glucose level is not specifically related to monitoring the immune status or treatment response in clients with immunodeficiency disorders.

c. Liver function tests (LFTs) are important for monitoring liver health but are not directly related to the immune status or treatment response in clients with immunodeficiency disorders.

d. An electrolyte panel is used to assess the balance of electrolytes in the body and is not specifically related to monitoring the immune status or treatment response in clients with immunodeficiency disorders.