Sumpump and Cityslicker,
Based on what is listed on the CKD sub-study poster from 2018, there are many metrics relative to CKD that will be measued that are not listed on the ClinicalTrials.gov listing, including but not limited to albumin, creatinine, and blood urinary nitrogen.
https://www.resverlogix.com/upload/media_element/125/20402f6425eb/2018-05-02-era-edta-poster-2018-kidney-disease-subgroup.pdf