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J R Soc Med. 1996 October; 89(10): 561–562.
PMCID: PMC1295956

Weekend versus weekday urine collections in assessment of stone-formers.

Abstract

Twenty-four-hour urine collections are an important part of the metabolic evaluation of stone-formers, but are difficult for patients at work. At weekends the results might be different. Forty-five stone-formers who worked at day jobs from Monday to Friday collected urine for 24 h on a normal working day and also on a Saturday or Sunday and the differences were evaluated. Average 24 h urine volume was higher on weekdays than at weekends. Calcium, oxalate, and uric acid excretion did not differ. These results imply an increased risk of crystalluria at the weekend. Therefore weekend collections are most likely to show abnormalities and should be acceptable to clinicians.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Robertson WG, Peacock M, Heyburn PJ, Marshall DH, Clark PB. Risk factors in calcium stone disease of the urinary tract. Br J Urol. 1978 Dec;50(7):449–454. [PubMed]
  • Ryall RL, Darroch JN, Marshall VR. The evaluation of risk factors in male stone-formers attending a general hospital out-patient clinic. Br J Urol. 1984 Apr;56(2):116–121. [PubMed]
  • Pak CY, Fetner C, Townsend J, Brinkley L, Northcutt C, Barilla DE, Kadesky M, Peters P. Evaluation of calcium urolithiasis in ambulatory patients: comparison of results with those of inpatient evaluation. Am J Med. 1978 Jun;64(6):979–987. [PubMed]
  • Tiselius HG. Practical aspects of the handling of samples and evaluation of laboratory data. Scand J Urol Nephrol Suppl. 1980;53:105–108. [PubMed]
  • Norman RW, Bath SS, Robertson WG, Peacock M. When should patients with symptomatic urinary stone disease be evaluated metabolically? J Urol. 1984 Dec;132(6):1137–1139. [PubMed]
  • Frank M, De Vries A. Prevention of urolithiasis. Education to adequate fluid intake in a new town situated in the Judean Desert Mountains. Arch Environ Health. 1966 Nov;13(5):625–630. [PubMed]

Articles from Journal of the Royal Society of Medicine are provided here courtesy of Royal Society of Medicine Press