Zimmer and Peacock is an ISO13485 contract developer and manufacturer of electrochemical biosensors, where receptors and recognition elements are a critical part of determining a diagnostics sensitivity and selectivity. The range of recognition elements exploited at ZP includes: enzymes, antibodies, aptamers, receptors, MIPS and MICPS. In this talk we will give some case studies of where synthetic and natural receptors and recognition elements are exploited in modern electrochemical biosensing.