A fasting blood test requires you to avoid eating or drinking anything for some time before your test. The amount of time to fast varies for different tests. It’s generally in the range of 8 to 12 ...

With home testing options increasing more than ever, you now also have the ability to test for kidney function within the comfort of your own home. Learn more about our four best picks for at-home ...

Hydrogen breath tests are a diagnostic tool that doctors use to identify small intestinal bacterial overgrowth (SIBO), lactose intolerance, and other digestive conditions. The test measures the amount ...

Have your COVID-19 rapid tests expired? Don’t toss them yet. Federal regulators have extended some tests’ expiration dates, meaning certain offerings are now usable for months longer. The reason for ...

A calprotectin stool test detects levels of calprotectin in stool. This protein indicates bowel inflammation. It can help diagnose and monitor conditions such as inflammatory bowel disease (IBD). A ...

As the nation experiences what many experts believe is the second-largest wave of COVID infections since the pandemic started, many Americans will be checking to make sure they don’t have the ...

ST. PAUL, Minn. (AP) — The U.S. citizenship test is being updated, and some immigrants and advocates worry the changes will hurt test-takers with lower levels of English proficiency. The ...