Gold Standard Diagnostics

Gold Standard Diagnostics Horsham is the leading provider of rapid, high performance test kits for detection of freshwater cyanotoxins and marine biotoxins associated with harmful algal blooms (HABs). With decades of expertise, we provide environmental monitoring programs, water utilities, government agencies, researchers, and the shellfish industry with accurate, actionable toxin data.

Core offerings include ABRAXIS® ELISA plate and test strip kits for rapid toxin detection and quantification. We are the only manufacturer of ADDA-specific test kits capable of detecting all 250+ microcystins variants. ELISA plates provide quantitative lab quality results in 2–4 hours using standard lab equipment, while field ready test strips enable on site screening in < one hour with no prior lab training.

Complementary products include algal toxin standards, QC materials, and proficiency testing programs to help laboratories validate performance and maintain regulatory confidence. Through rapid, reliable testing products and strong support, GSDH advances HAB preparedness, water quality protection, and public health.