Following a bone marrow transplant for leukemia, which laboratory value best indicates thrombocytopenia status?

Following a bone marrow transplant for leukemia, which laboratory value best indicates thrombocytopenia status?

• A. T4 lymphocyte count
• B. Red blood cell count
• C. Platelet count
• D. White blood cell count

Answer: (C)

Thrombocytopenia is defined by a low platelet count, so the platelet count directly indicates thrombocytopenia status. After a bone marrow transplant for leukemia, platelet production can take time to recover, making monitoring platelets crucial for assessing bleeding risk and readiness for procedures. Normal platelets are about 150,000 to 450,000 per microliter; when counts fall below this range, thrombocytopenia is present, with greater risk as the count drops further (especially below 50,000). The other counts measure different aspects: T4 lymphocytes reflect immune status, red blood cells indicate oxygen-carrying capacity (anemia), and white blood cells reflect infection risk. Thus, the platelet count best indicates thrombocytopenia.

Thrombocytopenia is defined by a low platelet count, so the platelet count directly indicates thrombocytopenia status. After a bone marrow transplant for leukemia, platelet production can take time to recover, making monitoring platelets crucial for assessing bleeding risk and readiness for procedures. Normal platelets are about 150,000 to 450,000 per microliter; when counts fall below this range, thrombocytopenia is present, with greater risk as the count drops further (especially below 50,000). The other counts measure different aspects: T4 lymphocytes reflect immune status, red blood cells indicate oxygen-carrying capacity (anemia), and white blood cells reflect infection risk. Thus, the platelet count best indicates thrombocytopenia.