title: Glomerular filtration rate, 131I-hippuran clearance and estimated creatinine clearance in cancer patients.
abstract: Glomerular filtration rate (GFR), 131I-Hippuran clearance and estimated creatinine clearance were investigated in 34 patients with cancer. For Hippuran clearance and GFR, analysed with the X-ray contrast (iohexol) and fluorescence technique, the least square linear regression coefficient was 5.01 +/- 0.41 (r = 0.91). This value concurs with the five to one ratio between GFR and renal plasma flow known from normal physiology and supports that Hippuran clearance is a valid measure of renal function. When the individual values of Hippuran clearance were divided by 5.01, the mean difference between the methods was 0.4 ml min-1 1.73 m-2 with standard deviation 13.4 ml min-1 1.73 m-2. The lower and upper limits of agreement were -26.7 and 25.9 ml min-1 1.73 m-2, respectively. Comparing creatinine clearance estimated from the serum creatinine level with GFR, the limits of agreement were -29.4 and 21.6 ml min-1 1.73 m-2. These agreement limits are in the same range as those which can be calculated from the data from other studies.
authors.affiliation: Department of Nuclear Medicine, Norwegian Radium Hospital, Oslo.
authors.forename: M W
authors.initials: MW
authors.lastname: Lindegaard
authors.forename: N
authors.initials: N
authors.lastname: Aass
authors.forename: E S
authors.initials: ES
authors.lastname: Bue
authors.forename: L
authors.initials: L
authors.lastname: Theodorsen
authors.forename: S D
authors.initials: SD
authors.lastname: Fosså
mesh_terms: D003404:Creatinine / Q000378:metabolism*; D005453:Fluorescence; D005919:Glomerular Filtration Rate; D006626:Hippurates; D006801:Humans; D009369:Neoplasms / Q000503:physiopathology*; D014565:Urogenital Neoplasms / Q000503:physiopathology
chemical_list: D006626:Hippurates; D003404:Creatinine; C030514:hippuric acid