Which of the following statements about thrombocytopenia is true?

Thrombocytopenia refers to a condition characterized by a lower-than-normal platelet count in the blood. A normal platelet count typically ranges from 150,000 to 450,000 platelets per microliter of blood. Therefore, a platelet count that can be less than 150,000 is an accurate statement regarding thrombocytopenia.

When the platelet count drops below this threshold, it can lead to increased bleeding and bruising, which is why understanding this condition is crucial in clinical settings. Various factors can contribute to thrombocytopenia, including bone marrow disorders, increased destruction of platelets, or dilutional effects from massive transfusions.

The other options misrepresent the characteristics and implications of thrombocytopenia. Platelet counts above 200,000 do not define thrombocytopenia; rather, platelet counts below 150,000 do. Additionally, thrombocytopenia can result from both acquired and hereditary conditions, but it is not restricted solely to genetic causes. Finally, it often does require medical intervention, especially if the count is significantly low or if the patient shows symptoms of bleeding.