A nurse is reviewing the CBC findings for a female client who is receiving combination chemotherapy for breast cancer. Which of the following findings should the nurse report to the provider?

Choice A reason: RBC of 4.2x10⁶/µL is within normal range (4.1-5.1x10⁶/µL for females), indicating no anemia. Chemotherapy-induced leukopenia (WBC 2,000/mm³) poses a higher infection risk, requiring urgent reporting, as RBC counts are stable, making this less critical. Choice B reason: WBC of 2,000/mm³ indicates severe leukopenia, a chemotherapy side effect increasing infection risk. This critical finding requires immediate provider notification for infection precautions or growth factor therapy, as it compromises immunity, making it the most urgent CBC result to report. Choice C reason: Hgb of 12.0 g/dL is normal (12-14.5 g/dL for females), indicating no significant anemia. Leukopenia (WBC 2,000/mm³) is more concerning, as it heightens infection risk, a life-threatening complication, making hemoglobin a lower-priority finding for reporting. Choice D reason: Platelets at 150,000/mm³ are normal (150,000-450,000/mm³), indicating low bleeding risk. Leukopenia (WBC 2,000/mm³) is critical, requiring provider intervention to prevent infection, making platelet count less urgent, as it does not reflect an immediate threat.