What is the normal range for platelet counts in infants?

The normal range for platelet counts in infants is recognized as being between 150,000 and 450,000 platelets per microliter of blood. This range is important as it reflects the typical physiological state of infants and is critical for assessing their hemostatic function and overall health. Platelets play a key role in blood clotting, and too low or too high a count can indicate various health issues that need monitoring and potential intervention.

In comparison to the other options, while some ranges may be close, they either exclude the full scope of normal platelet counts or fall outside the established normal values for infants. For instance, a count of 100,000 to 300,000 could be low in certain clinical contexts, and counts below 150,000 may indicate thrombocytopenia. Likewise, the ranges that extend to 500,000 may include counts that are higher than what is typically seen as normal and could suggest a hyperreactive state that needs examination. Therefore, understanding the normal range assists in evaluating conditions such as infections, bleeding disorders, or bone marrow functioning in neonatal patients.