Tox Tuesday: The advantages of ELISA drug testing

The enzyme-linked immunosorbent assay (ELISA; pronounced like the name “Eliza”) is a testing technique used to detect and measure substances in biological samples. It’s been one of the most trusted testing methods for nearly half a century and is popular in many fields, for everything from food allergen detection to medical screening for various illnesses. […]

New system detects active Shiga toxin

Scientists at USDA’s Agricultural Research Service Western Regional Research Center have come up with a new way to detect biologically active Shiga toxin, a product of pathogenic Escherichia coli serotype O157:H7, through the use of a camera and a light-emitting source that biologically determines the active toxin.

Affordable, sensitive devices like this are needed to […]