Bioassay LOD Fitter

A web application for analysing concentration-response data, performing advanced sigmoidal curve fitting, and rigorously calculating the Limit of Detection (LOD).

Bioassay LOD Fitter is a web application built to analyse concentration-response data, perform advanced sigmoidal curve fitting, and rigorously calculate the Limit of Detection (LOD) for diagnostic assays using validated statistical frameworks.

Features

  • Completely client-side processing (no server uploads needed)
  • Interactive Data Entry for calibration standards and blank measurements
  • Advanced Curve Fitting automatically selects between 4PL and 5PL models
  • Interactive logarithmic plot displaying data points, modelled curve, 95% CI, and critical limits ($L_C$, $L_D$, and LOD)
  • High-Resolution Export to download publication-ready PNGs