ALB and chronic kidney disease: A National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) working group recently developed a CKD e-phenotype based on eGFR and measures of proteinuria, including urinary albumin-creatinine ratio (UACR), urinary protein-creatinine ratio (UPCR), and dipstick urinary albumin, that identified CKD from the electronic health record across 4 health care settings with 99% sensitivity and 99% specificity.14