Neutropenia is defined as an ANC below which value?

Neutropenia is defined as an ANC below which value?

• A. ANC < 2.0 x10^9/L
• B. ANC < 1.5 x10^9/L
• C. ANC < 3.0 x10^9/L
• D. ANC < 4.0 x10^9/L

Answer: (B)

Neutropenia means there aren’t enough neutrophils to defend against infections. The key measure is the absolute neutrophil count (ANC), which you get from the complete blood count by combining the percentage of neutrophils (and bands) with the total white blood cell count. Normal ANC is roughly 1.5 to 8.0 x 10^9/L. Neutropenia is defined as an ANC below 1.5 x 10^9/L because that level is when infection risk starts to rise due to reduced neutrophil defenses. Among the options, only a value below 1.5 x 10^9/L meets this definition; higher values are within the normal or non-neutropenic range. For context, severer grades exist (for example, ANC below about 0.5 x 10^9/L) but the basic cutoff for neutropenia is 1.5 x 10^9/L.

Neutropenia means there aren’t enough neutrophils to defend against infections. The key measure is the absolute neutrophil count (ANC), which you get from the complete blood count by combining the percentage of neutrophils (and bands) with the total white blood cell count. Normal ANC is roughly 1.5 to 8.0 x 10^9/L. Neutropenia is defined as an ANC below 1.5 x 10^9/L because that level is when infection risk starts to rise due to reduced neutrophil defenses. Among the options, only a value below 1.5 x 10^9/L meets this definition; higher values are within the normal or non-neutropenic range. For context, severer grades exist (for example, ANC below about 0.5 x 10^9/L) but the basic cutoff for neutropenia is 1.5 x 10^9/L.