Haemodynamic or metabolic stimulation tests to reveal the renal functional response: requiem or revival?

[De Moor, Bart; Swennen, Quirine] Univ Hasselt, Fac Med & Life Sci, Diepenbeek, Belgium. [De Moor, Bart; Vanwalleghem, Johan F.; Stas, Koen J.] Jessa Hosp Hasselt, Dept Nephrol, Hasselt, Belgium. [Meijers, Bjorn K. I.] Univ Ziekenhuis Leuven, Dept Nephrol, Leuven, Belgium. [Meijers, Bjorn K. I.] Katholieke Univ Leuven, Dept Immunol & Microbiol, Fac Med, Leuven, Belgium.