A Laboratory Scientist Is Attempting to Develop a Screening Tool

question 23

Multiple Choice

A laboratory scientist is attempting to develop a screening tool that will detect leukemia before children show any symptoms of the disease, because it is most curable in its early stages. The scientist wants a test that will detect all children, whether or not it produces some false positives. What does the researcher want, in terms of that new screening tool?

• A)Maximum sensitivity
• B)A high LR⁺
• C)Maximum specificity
• D)A high LR^-
• E)High interrater reliability

---

Definitions:

Fibrinogen

A blood plasma protein that's essential in blood clot formation.

Prothrombin

A protein produced by the liver and converted into thrombin during blood clotting. Its activity is essential for coagulation.

Colorectal Cancer

Colorectal cancer is a type of cancer that begins in the colon or rectum, parts of the large intestine, and is often detectable by screening tests before symptoms develop.

Anemia

A condition characterized by a deficiency of red blood cells or hemoglobin, leading to fatigue, weakness, and shortness of breath.