There are numerous synonyms for the phrase "did tests" which can be used interchangeably in different contexts. These include "performed experiments," "conducted trials," "examined samples," "ran analyses," "undertook investigations," "administered assessments," "carried out probes," "executed surveys," "completed inspections," and "completed evaluations." Each of these synonyms highlights different aspects of undertaking tests, from the scientific method involved in experimentation to the meticulous process of conducting surveys and analyzing data. Using synonyms can help to add variety to writing, avoid repetition, and ensure clarity of communication.