Performs a range of standard to moderately advanced and complex research assignments, under detailed and controlled protocol parameters, in a health sciences laboratory, clinical, and/or field research setting. Conducts a variety of tests and procedures of an advanced, technically complex nature; prepares data, samples, and/or specimens, and sets up and operates moderately complex and/or advanced laboratory equipment. Independently conducts assignments and provides initial summary analyses to investigators; may provide specific guidance and training to entry-level technicians and/or interns.