What is the difference between a diagnostic test and a screening test?

A diagnostic test is completed to either diagnose or rule out a specific health condition. The results of diagnostic tests alone provide enough confidence for a healthcare provider to diagnose and make treatment determinations. 

A screening test is done to help determine a risk for a specific health condition. The results of screening tests alone cannot be used to confirm or rule out a particular diagnosis. If positive, the results are to be used in combination with symptoms, medical and family history, and additional testing as needed to aid in diagnosing or ruling out a disease. 

The Celiac Disease Screening Test checks for antibodies that, when present or elevated, may indicate celiac disease. This is intended to be a first step in the process of determining if you have celiac disease. Positive results are not a diagnosis of celiac disease but may mean you need further evaluation and additional testing, which might include an endoscopy. 

Everlywell offers access to both screening and diagnostic tests. By joining the Everlywell+ lab test monthly membership, you can now stay on top of your health year-round with your choice of a monthly test for only $39/month.