title: Creatinine excretion: diurnal variation and variability of whole and part-day measures. A methodologic issue in psychoendocrine research.
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D002940:Circadian Rhythm; D003404:Creatinine / Q000032:analysis / Q000652:urine*; D005163:Factor Analysis, Statistical; D005260:Female; D005919:Glomerular Filtration Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D012106:Research; D013048:Specimen Handling; D013223:Statistics as Topic; D013997:Time Factors
chemical_list: D003404:Creatinine