Kidney Failure, ChronicCreatinineKidneyKidney DiseasesRenal InsufficiencyRenal Insufficiency, ChronicGlomerular Filtration RateKidney TransplantationAcute Kidney InjuryKidney Function TestsRenal DialysisHeart FailureChronic DiseaseProteinuriaRisk FactorsKidney TubulesDiabetic NephropathiesBiological MarkersRefeeding SyndromeDisease ProgressionAlbuminuriaPodocytesTime FactorsKidney CortexNephrectomyPolycystic Kidney, Autosomal DominantTreatment OutcomeRetrospective StudiesKidney GlomerulusCohort StudiesProspective StudiesCardiovascular DiseasesFollow-Up StudiesHypertensionRisk AssessmentLipocalinsCystatin CSeverity of Illness IndexPeritoneal DialysisNephrologyPolycystic Kidney DiseasesKidney NeoplasmsKidney Tubules, ProximalTreatment FailureBlood PressurePrognosisAlbertaDisease Models, AnimalProportional Hazards ModelsKidney MedullaAntihypertensive AgentsUnited StatesIncidenceKidney CalculiAnemiaBlood Urea NitrogenHematinicsUremiaRenal OsteodystrophyPrevalenceCross-Sectional StudiesParathyroid HormoneKidney Tubules, CollectingRenal Replacement TherapyPredictive Value of TestsHyperparathyroidism, SecondaryPhosphorusHyperphosphatemiaCalcinosisUrinalysisKidney Tubular Necrosis, AcuteKidney Diseases, CysticAngiotensin-Converting Enzyme InhibitorsKidney Concentrating AbilityErythropoietinPhosphatesNephronsUreaGraft RejectionIndicanCystatinsGraft SurvivalHypertension, RenalMultivariate AnalysisComorbidityRats, Sprague-DawleyVascular CalcificationHemoglobinsNephritis, InterstitialKidney Tubules, DistalAge FactorsImmunosuppressive AgentsIohexolRenin-Angiotensin SystemChi-Square DistributionUreteral ObstructionUric AcidSurvival RateCardio-Renal SyndromeNephritis