Medical tests can help detect a condition, determine a diagnosis, plan treatment, check to see if treatment is working, or monitor the condition over time. A doctor may order these tests as part of a routine checkup, to check for certain diseases and disorders, or to monitor your health.

MedlinePlus offers hundreds of articles about medical tests. These pages explain what the tests are used for, why a doctor may order them, how a test will feel, and what the results may mean.

In the Medical Tests section, you can browse medical tests alphabetically, similar to other sections we have seen.

For example, let’s select Allergy Skin Test.