Table 4.
R 2 values and associated P‐values of sCr and sCysC measured with the PENIA and PETIA versus plasma clearance of creatinine, exo‐and endo‐iohexol
| PECCT | PexICT | PenICT | |
|---|---|---|---|
| sCysC PENIA | 0.46 (P < .001) | 0.34 (P < .001) | 0.37 (P < .001) |
| sCysC PETIA | 0.44 (P < .001) | 0.31 (P = .003) | 0.36 (P = .001) |
| sCr | 0.74 (P < .001) | 0.68 (P < .001) | 0.67 (P < .001) |
sCr, serum creatinine; sCysC, serum cystatin C; PENIA, particle enhanced nephelometric immunoassay; PETIA, particle enhanced nephelomtric immunoassay; PECCT, plasma exogenous creatinine clearance test; PexICT, plasma exo‐iohexol clearance test; PenICT, plasma endo‐iohexol clearance test.