What laboratory finding is characteristic of howell-jolly bodies?

Study for the USMLE Step 2 CK Exam. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

The presence of nuclear remnants in red blood cells, known as Howell-Jolly bodies, is indicative of a disruption in normal spleen function. Howell-Jolly bodies are small, round inclusions that are remnants of the cell nucleus. They can be found in the peripheral blood of patients with asplenia or hyposplenia, as the spleen usually removes these nuclear remnants from circulating erythrocytes.

In individuals with compromised spleen function—whether due to surgical removal (splenectomy), certain hematological disorders, or congenital splenic dysfunction—Howell-Jolly bodies can persist in the bloodstream. This finding can help identify patients at increased risk for infections, particularly with encapsulated organisms, since the spleen plays a crucial role in filtering blood and clearing such pathogens.

The other options do not directly associate with Howell-Jolly bodies, as elevated white blood cell counts, increased platelet counts, and decreased hemoglobin levels relate to different hematologic conditions and findings, not specifically to the presence of nuclear remnants in red blood cells.

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