The original peritoneal equilibration test (PET) was used to classify peritoneal dialysis (PD) patients using a 2.27% glucose solution. It has since been suggested that a 3.86% glucose solution be used because this provides better information about ultrafiltration (UF) capacity and the sodium (Na) sieving of the peritoneal membrane. La Millia and col had published several papers about modifications of this test. and recently they published  the reference values for a PET using a 3.86% glucose solution (PET-3.86%)Perit Dial Int. 2017 Nov-Dec;37(6):633-638. doi: 10.3747/pdi.2017.00004. Epub 2017 Jul 11