The nurse is caring for a client suspected of having an immunodeficiency disorder. Which diagnostic test should the nurse anticipate being ordered to confirm the diagnosis?

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.

Explanation: The correct answer is d. Selective IgA deficiency. This disorder is characterized by a lack of immunoglobulin A, which can lead to an increased susceptibility to infections, particularly in the respiratory and gastrointestinal tracts.

Incorrect choices:

a. Selective IgM deficiency is a rare immunodeficiency disorder characterized by a lack of immunoglobulin M (IgM), not IgA.

b. X-linked agammaglobulinemia is a primary immunodeficiency disorder caused by a mutation in the BTK gene, resulting in a deficiency of B cells and immunoglobulins.

c. Common variable immunodeficiency (CVID) is a heterogeneous group of disorders characterized by decreased levels of immunoglobulins, including IgA, IgG, and IgM.