How long is an investigator required to keep consent documents, irb correspondence, and research records? a. until the study is closedb. until data analysis is completec. for a minimum of three years after completion of the studyd. as long as the investigator is at that institution

. C.For a minimum of three years after completion of the study

Explanation:

According to the HHS protection rules for protection of information of human subjects involved in the research study all the consent forms, IRB correspondence and all research reports must be kept by the investigator or organization for minimum period of three years after completition of study. This is done as the IRB may claim to get the knowledge of consent has been taken from participants for the study.

the numbers are even higher.

explanation:

statistics have shown that more that 60% of test takers fail the first time and have to retake the test.