What Test Results Really Mean: A Nurse's Guide to Accuracy, False Alarms, and Smart Questions

Lab tests and imaging feel definitive — until they don't. In this episode Nurse Jessi breaks down how medical tests actually work: what sensitivity and specificity mean, why false positives and negatives happen, and how pre-test probability (your symptoms, exposure, and history) changes the meaning of a result. Through short, real-world examples (COVID-era rapid tests, routine screening tests, and common diagnostic scans), you'll learn practical questions to ask your clinician, red flags that justify follow-up, and how to avoid unnecessary anxiety or procedures. This episode translates statistical concepts into everyday language and gives listeners concrete scripts to use in appointments. By the end you'll be equipped to interpret a test result in context, reduce information overload, and advocate for clearer conversations with your care team.