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LEED recognizes two primary pathways to demonstrate acceptable IAQ prior to occupancy: conducting a building flush-out with 100% outdoor air to purge contaminants from construction/finishing, or performing air testing for specific pollutants against defined thresholds. The choice depends on project constraints—climate and schedule may favor testing, while projects with flexible timelines may opt for a staged flush-out. Regardless of the final pathway, implementing a construction IAQ management plan (protecting absorptive materials, filtration on return air, source control, housekeeping) is essential to minimize pollutant loads from the outset. Skipping both measures risks occupant exposure to VOCs and particulates and undermines LEED’s health objectives. Claiming that only one option is acceptable is inaccurate; both are valid when executed per requirements. Selecting the path that best fits logistics while maintaining rigorous IAQ practices yields a smoother turnover, fewer complaints, and credible documentation that the indoor environment is fit for occupancy.