title: Calibration of the Siemens cystatin C immunoassay has changed over time.
authors.forename: Anders
authors.initials: A
authors.lastname: Larsson
authors.forename: Lars-Olof
authors.initials: LO
authors.lastname: Hansson
authors.forename: Mats
authors.initials: M
authors.lastname: Flodin
authors.forename: Ronit
authors.initials: R
authors.lastname: Katz
authors.forename: Michael G
authors.initials: MG
authors.lastname: Shlipak
mesh_terms: D002138:Calibration; D055316:Cystatin C / Q000097:blood*; D005919:Glomerular Filtration Rate; D006801:Humans; D007118:Immunoassay; D012044:Regression Analysis
chemical_list: D055316:Cystatin C