Which lab value is a cause for concern that the nurse should report to the healthcare provider?

A. HCT = 50: Hematocrit of 50% may be slightly elevated, but is not immediately dangerous and could be normal in dehydration. B. RBC = 4.5: This value is within normal range for most children and adults, so not concerning. C. WBC = 2: A WBC of 2 (2,000/mm³) indicates leukopenia, increasing risk of infection. This is especially concerning in immunocompromised or post-chemotherapy clients. D. Platelets = 325,000: This value is within the normal range (150,000–450,000), so not a cause for concern.