Validation of an equation for free calcium estimation: accuracy improves after adjustment for phosphate and CO 2 .
Juan Carlos Ramírez-SandovalPablo Diener-CabiesesFabián Gutiérrez-ValleSofía Ley-TapiaSantiago Pastrana-BrandesPablo E GalindoReynerio FagundoMauricio Moreno-YañezAlfredo Adolfo Reza-AlbarránRicardo Correa-RotterPublished in: International urology and nephrology (2022)
The novel equation proposed for prediction of free calcium could be useful when free calcium is not available. The conventional formulas misclassify many patients, in particular when phosphate or bicarbonate disturbances are present.