Phytoxigene™ DinoDTec: is a molecular (DNA) based technology (Real Time PCR) that detects and quantifies the presence of sxtA genes from saxitoxin producing Dinoflagellates in marine environments. The assay is designed for the screening of environmental samples to identify potential blooms of PSP dinoflagellates. The abundance of sxtA genes has been shown to correlate with the abundance of the saxitoxin-producing species. Detection and quantification of sxtA in HAB events has been correlated with saxitoxin uptake in shellfish.