Which laboratory test is routinely used as part of lymphoma staging?

Which laboratory test is routinely used as part of lymphoma staging?

• A. Complete blood count
• B. Serum ferritin
• C. Creatinine kinase
• D. Serum amylase

Answer: (A)

A complete blood count is routinely used in lymphoma staging because it directly reflects bone marrow function and systemic disease burden. By measuring red cells, white cells, and platelets, it can reveal anemia, leukopenia, or thrombocytopenia that may indicate marrow involvement by lymphoma or large disease burden. This baseline information helps guide staging interpretation and treatment planning and is monitored over time during therapy. The other laboratory tests listed aren’t used for staging in this context. Serum ferritin mainly indicates iron stores and inflammation rather than disease extent; creatinine kinase points to muscle injury or related conditions; serum amylase relates to pancreatic enzyme activity. While other labs can be useful for overall assessment and prognosis, they don’t play a routine role in staging lymphoma.

A complete blood count is routinely used in lymphoma staging because it directly reflects bone marrow function and systemic disease burden. By measuring red cells, white cells, and platelets, it can reveal anemia, leukopenia, or thrombocytopenia that may indicate marrow involvement by lymphoma or large disease burden. This baseline information helps guide staging interpretation and treatment planning and is monitored over time during therapy.

The other laboratory tests listed aren’t used for staging in this context. Serum ferritin mainly indicates iron stores and inflammation rather than disease extent; creatinine kinase points to muscle injury or related conditions; serum amylase relates to pancreatic enzyme activity. While other labs can be useful for overall assessment and prognosis, they don’t play a routine role in staging lymphoma.