What is the predictive value of a medical test?

RealAge

An important aspect of accuracy of a test is called predictive value. This has to do with the confidence one can have in a specific test result. Positive predictive value (PPV) is the chance that a positive test result is really due to the disease. Negative predictive value (NPV) is the probability that a negative result means no disease is present.

Continue Learning about Medical Techniques & Procedures

Anthony S. Youn, MD

Microneedle treatments can tighten up skin and remove fine lines and blemishes; it works by the prin...

Tarique D. Periera, MD

For transcranial magnetic stimulation (TMS), patients sit in a dental chair and wear a small headset...

How Is Transcranial Magnetic Stimulation (TMS) Performed?

What Is Transcranial Magnetic Stimulation (TMS)?

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.