obsolete creatinine homeostasis https://github.com/geneontology/go-ontology/issues/24297 true OBSOLETE. Any biological process involved in the maintenance of an internal steady state of creatinine. pr 2012-03-22T02:52:50Z GO:0097273 This term was obsoleted because this process does not exist: creatinine is a waste product, there are no biological processes to maintain its level, although some mutants accumulate excesses. biological_process