title: Daily variability of serum prostate-specific antigen in men over 50 years of age.
abstract: In order to investigate the variability of serum prostate-specific antigen (PSA) levels a total of 44 men 50 years or older with normal digital rectal examination were enrolled. Blood samples were obtained three times within a day, and, immediately before and 72 hours after hospitalisation. Alterations in serum PSA value during the day and after hospitalisation, which might affect clinical decision, occurred in 15% of the cases with borderline PSA values. The results indicate that there may be significant changes in serum PSA levels within a day and after hospitalisation.
authors.affiliation: Department of Urology, Hacettepe University, Faculty of Medicine, Ankara, Turkey. aaftekin@tr.net
authors.forename: A
authors.initials: A
authors.lastname: Tekin
authors.forename: N
authors.initials: N
authors.lastname: Atsu
authors.forename: H
authors.initials: H
authors.lastname: Ozen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002940:Circadian Rhythm / Q000502:physiology; D006760:Hospitalization; D006801:Humans; D008297:Male; D008875:Middle Aged; D017430:Prostate-Specific Antigen / Q000097:blood*; D012016:Reference Values
chemical_list: D017430:Prostate-Specific Antigen