CRA Toolbox. Cost: $49 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions CRA Toolbox.: CRA Toolbox. is a special purpose, PDA-based calculator/converter designed for clinical data research associates who need to validate data on various clinical forms and reports during the course of their work. It consists of over 15 functions for calculating & validating data elements which commonly appear in clinical research forms including: - BMI - Cholesterol (LDL) - Pregnancy Due Date - Temperature Conversion - Total Daily Dose - Washout Periods - Visit Date / Return-Visit Date(s)