Name (Reference) | Formula |
---|---|

PCr-based formulas | |

Bedside Schwartz (16) | K×height/PCr, with K=0.413 |

Schwartz–Lyon (14) | K×height/PCr, with K=0.413 in boys >13 yr and K=0.367 in others |

CystC-based formulas | |

Hoek (13) | −4.32+(80.35/CystC) |

Filler (12) | Log(eGFR)=1.962+[1.123×log(1/ CystC)] |

Combined formulas | |

CKiD 2012 (18) | 39.8 × (height/ PCr)^{0.456}×(1.8/CystC)^{0.418}×(30/BUN)^{0.079}×(1.076)^{male}×(height/1.4)^{0.179} |

Zappitelli (15) | [43.82×e^{0.003×height} ^{(cm)}]/[Cys^{0.635}]×[PCr^{0.547}] |

In kidney transplant recipients:×1.165 | |

In patients with spina bifida: 1.57×PCr^{0.925} |

BUN is expressed in milligrams per deciliter. Height is expressed in centimeters in the bedside Schwartz, Schwartz-Lyon, and Zappitelli formulas, and in meters in the CKiD formula. Weight is expressed in kilograms, and age is expressed in years. PCr, plasma creatinine, expressed in milligrams per deciliter; CystC, cystatin C, expressed in milligrams per liter; CKiD, CKD in Children.