How can a false-positive test result lead to additional testing?

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magnetic resonance imaging — diagnosis Magnetic resonance imaging (MRI) is a powerful diagnostic technique that is used to visualize organs and structures inside the body without the need for X-rays or other radiation.

A false-positive test result occurs when a diagnostic test incorrectly indicates the presence of a disease or health condition that is not actually present.1

Because medical professionals must prioritize patient safety and accuracy, an initial positive finding—even if incorrect—often necessitates further investigation to confirm or rule out the suspected condition. This can trigger a "chain reaction" of additional diagnostic procedures, such as follow-up blood work, imaging scans, or biopsies, to verify the original result. While these extra steps are essential for ensuring an accurate diagnosis, they can also lead to unnecessary patient anxiety and, in some cases, the risk of receiving unneeded medical treatments.1