Is specific gravity a good estimate of urine osmolality?

Journal of Clinical Laboratory Analysis

Volumn 24, Issue 6, 2010, Pages 426-430

  Imran, Sethi ^a   Eva, Goldwater ^b   Christopher, Shutty ^a   Flynn, Ethan ^a   Henner, David ^a  

^a BERKSHIRE MEDICAL CENTER   (United States)

^b UNIVERSITY OF MASSACHUSETTS   (United States)

Author keywords

Urinalysis; Urine osmolality; Urine specific gravity

Indexed keywords

BILIRUBIN; GLUCOSE; HEMOGLOBIN; KETONE; NITRATE; PROTEIN; UROBILINOGEN; TEST STRIP;

ARTICLE; LABORATORY TEST; PH; REFRACTOMETRY; RELATIVE DENSITY; RETROSPECTIVE STUDY; TEST STRIP; URINALYSIS; URINE; URINE OSMOLALITY; CHEMISTRY; COMPARATIVE STUDY; HUMAN; OSMOLARITY; PROCEDURES; STATISTICAL MODEL;

HUMANS; HYDROGEN-ION CONCENTRATION; LINEAR MODELS; OSMOLAR CONCENTRATION; REAGENT STRIPS; REFRACTOMETRY; RETROSPECTIVE STUDIES; SPECIFIC GRAVITY; URINALYSIS; URINE;

EID: 78649610775     PISSN: 08878013     EISSN: 10982825     Source Type: Journal    
DOI: 10.1002/jcla.20424     Document Type: Article

References (14)

1. Roessingh AS, Drukker A, Guignard J-P. Dipstick measurements of urine specific gravity are unreliable. Arch Dis Child 2001;85:155-157.
2. Bakhshandeh S, Morita Y. Comparison of urine concentration tests: Osmolality, specific gravity and refractive index. Mich Med 1975;74:399-403.
3. Rose BD, Post TW. Clinical Physiology of Acid-Base and Electrolyte Disorders, fifth edition. New York: McGraw-Hill. 2001. p 410-412.
4. Miller RB. Urinalysis. In: Massry SG, Glassock RJ, editors. Textbook of Nephrology, Chapter 81. Baltimore, MD: Williams and Wilkins. 1983. p 11.3-11.24.
5. Chadha V, Garg U, Alon U. Measurement of urinary concentration: A critical appraisal of methodologies. Pediatr Nephrol 2001;16:374-382
6. Dorner K, Campos R, Bornsen S. Further evaluation of the SG test strip for estimation of urine osmolality. J Clin Chem Clin Biochem 1984;22:419-425.
7. Adams LJ. Evaluaton of Ames Multistix-SG for urine specific gravity versus refractometry specific gravity. Am J Clin Pathol 1983;80:871-873.
8. Audouin W, Couture G, Girard J. Evaluation de la densite urinaire par la bandelette reactive de la Cie AMES et comparaison avec la densite donnee par le refractometre et avec l'osmolalite urinaire. Clin Biochem 1985;18:130-133.
9. Dorizzi R, Pradella M, Bertolodo S. Refractometry, test strip, and osmometry compared as measures of relative density of urine. Clin Chem 1987;33:190a.
10. Luft F, Aronoff G, Walker N. Determining specific gravity of urine with reagent sticks. Clin Chem 1984;30:582.
11. Voinescu G, Shoemaker M, Moore H, et al., The relationship between osmolality and specific gravity. Am J Med Sci 2002;323:39-42.
12. Gounden D, Newall RG. Urine specific gravity measurements: Comparison of a new reagent strip method with existing methodologies, as applied to the water concentration/dilution tests. Curr Med Res Opin 1983;8:375-381.
13. Kiichi I, Masaharu N, Toshikazu K. Study of urine specific gravity by reagent strip method. Tokai J Exp Clin Med 1983;8:247-255.
14. Frew A, Mcewan J, Bell G. Estimation of urine specific gravity and osmolality using a simple reagent strip. Br Med J 1982;285:1168.