Berechnung

1- 25 Jahre: > 90 ml/min/1.73m²

> 25 Jahre: > 60 ml/min/1.73m²

Zur Berechnung der GFRs bei Kindern mit CKD zwischen 1-25 Jahre wird CKiD U25-Formel empfohlen.

eGFR = k X (1/CysC)

Geschlechts- und altersabhängige k-Werte:
Alter                                    weiblich                                  männlich
1 – 12 Jahre:            79.9 * 1.004 ^(Alter-12)            87.2 * 1.011 ^(Alter-15)
12 – 15 Jahre:          79.9 * 0.974 ^(Alter-12)            87.2 * 1.011 ^(Alter-15)
15 – 18 Jahre:          79.9 * 0974 ^(Alter-12)             79.9 * 0.960^(Alter-15)
18 – 25 Jahre:          68.3                                       77.1

Literaturverzeichnis:
1. Finney H, Newman DJ, Thakkar H, Fell JM, Price CP: Reference ranges for the plasma cystatin C and creatinine measurements in premature in-fants, neonates, and older children. Arch Dis Child. 2000 Jan;82(1):71-75. doi: 10.1136/adc.82.1.71

2. Jacalyn Kelly, Joshua E. Raizman, Victoria Bevilacqua, Man Khun Chan, Yunqi Chen, Frank Quinn, Beth Shodin, David Armbruster, Khosrow Adeli,Complex reference value distributions and partitioned reference in-tervals across the pediatric age range for 14 specialized biochemical mar-kers in the CALIPER cohort of healthy community children and adolescents, Clinica Chimica Acta, Volume 450, 2015, Pages 196-202, ISSN 0009-8981, https://doi.org/10.1016/j.cca.2015.08.020.

3. Nitsch D, Sandling JK, Byberg L et al: Fetal, developmental, and parental influences on cystatin C in childhood: the Uppsala Family Study. Am J Kidney Dis. 2011 Jun;57(6):863-872. doi: 10.1053/j.ajkd.2010.12.025