Question

A normal biodistribution of In-111 labeled leukocytes will demonstrate the greatest tracer uptake at 24 hours post injection in which of the following sites?

1) Liver
2) Spleen
3) Lungs
4) Kidneys

Answer 1

The normal biodistribution of In-111 labeled leukocytes shows the greatest uptake at 24 hours post-injection in the spleen.

Step-by-step explanation:

When a radioactive tracer, In-111 labeled leukocytes, is injected into the body, it is used to detect the sites of inflammation or infection. In this case, the question is asking about the biodistribution of this tracer at 24 hours post injection. At this time point, the tracer will have the greatest uptake in the spleen. This is because the spleen is a major site for the immune response and leukocytes play a crucial role in fighting off infections and inflammation.