process in which undesired metabolites and toxic
by-products, such as urea and creatine, are removed from blood.
PAC, 1996, 68, 1479
(Terminology for membranes and membrane processes (IUPAC Recommendations 1996))
on page 1487
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook