Somewhere between 20 and 30 percent of supposedly decaffeinated coffee and tea is actually fairly high in caffeine, but a new test kit can help people tell the difference. A strip of paper soaks up fluid from a sample, and antibodies in the strip produce colored lines if the sample contains caffeine. The antibodies were designed by the test’s manufacturer, Silver Lake Research, which also has antibody tests for contaminants in food sources and water.
Credit: Joshua Scott
Product: D+caf Test Strip
Cost: $9.95 for a package of 20 strips
Company: Silver Lake Research
Other products in this section:
Become an MIT Technology Review Insider for in-depth analysis and unparalleled perspective.Subscribe today
Subscribe to Continue Reading
Uh oh–you've read all of your free articles for this month.
The Easiest Place to Use CRISPR Might Be in Your Ear
Scientists are hopeful they can inject the gene-editing technology directly into the ear to stop hereditary deafness.
Five Ways to Get CRISPR into the Body
Scientists are investigating a range of different delivery mechanisms for the gene-editing tool, from topical gels to skin grafts.
Even at $500K, Gene Therapy Could Be a Bargain for Some Diseases
A one-time gene therapy that costs half a million dollars sounds crazy until you add up what it costs to treat some diseases over a lifetime.