Probably the most common report in the concrete industry is the concrete test report. Typically, a report is sent when a 7-day break is completed. Later, the same report is updated and resent with the 28-day test results. The concrete test report serves one basic purpose: to assure those involved with a project that the right concrete was delivered to the job site. While the format of test reports can vary from one testing laboratory to the next, each will contain the information needed to determine whether the concrete meets the job-site requirements.