Matt Elliott is a senior editor at CNET with a focus on laptops and streaming services. Matt has more than 20 years of experience testing and reviewing laptops. He has worked for CNET in New York and ...

If you're lactose intolerant, you will notice symptoms after you consume dairy. A hydrogen breath test measures hydrogen levels to check for lactose intolerance. A glucose blood test can show lactose ...

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

Pregnancy tests are most accurate after a missed period. Early tests may detect pregnancy 10 days after conception but are less accurate. Pregnancy tests are most accurate when you use first morning ...

At-home testosterone test kits use a finger-prick blood sample, with results generally available within a week. Some companies also offer saliva-based tests, which are pain-free and easy to collect, ...

Taking a pregnancy test too early can produce a false negative result. And the prospect of a major life change like pregnancy is a time when you want to make sure you're getting the most accurate ...

A stress test measures how well your heart works when put under stress. It is ordered to assess exercise tolerance, see if your heart can respond to demands, or test if heart medications are working.

Don't throw out your expired COVID tests just yet. Here's how to find out if the expiration date has been extended. Katie covered all things how-to at CNET, with a focus on Social Security and notable ...