This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
TRP – tubular phosphate reabsorption
From phosphate and creatinine in urine and serum – normal approximately 85–95 %
Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.
Frequently asked questions
TRP – tubular phosphate reabsorption: What does this calculator compute?
Calculates tubular phosphate reabsorption (TRP = 1 − U-phosphate × P-creat / (P-phosphate × U-creat)) as a percentage and from it TmP/GFR without correction (TRP × serum phosphate); the Payne correction for adults and the age-related reference ranges (Derain Dubourg 2022) are shown by the TmP/GFR calculator.
TRP – tubular phosphate reabsorption: Which sources is this calculator based on?
Derain Dubourg L, Aurelle M, Chardon L, Flammier S, Lemoine S, Bacchetta J: Tubular phosphate handling: references from child to adulthood in the era of standardized serum creatinine (Nephrol Dial Transplant 37:2150–2156) (2022); Emmens JE et al.: Assessment of Proximal Tubular Function by Tubular Maximum Phosphate Reabsorption Capacity in Heart Failure (Clin J Am Soc Nephrol 17:228) (2022)