Abstract
A panel of monoclonal antibodies (MAbs) was raised against tea polyphenols conjugated to bovine serum albumin. A cross‐reactivity study carried out against various purified polyphenols showed that most of the antibodies generated have the ability to recognize epigallocatechin > epicatechin > thearubigin = theaflavin > epicatechin‐3‐gallate = epigallocatechin‐3‐gallate > rutin. One of the selected MAbs, 5756.3, was used in an immunoassay to measure polyphenols in tea, urine and blood samples.