Variability of Symmetric Dimethylarginine in Apparently Healthy Dogs

M. A. Kopke, R. K. Burchell, C. G. Ruaux, S. E. Burton, N. Lopez-Villalobos, A. Gal

Research output: Contribution to journalArticle

Abstract

Background: Symmetric dimethylarginine (SDMA) is a screening tool for early kidney dysfunction and monitoring treatment in cases of chronic kidney disease (CKD). There are no current studies describing the suitability of this test for use with published population-based reference intervals. Hypothesis/Objectives: To determine the components of biological variability, the index of individuality (IOI), the critical difference between sequential measurements (CD) and the number of measurements required to assess the homeostatic set point (HSP), for both SDMA and serum creatinine (sCr), in apparently healthy dogs. Animals: Twenty apparently healthy adult dogs owned by clients or staff at a veterinary teaching hospital. Methods: Prospective, observational study. Blood was collected from each dog on 9 occasions, and SDMA and sCr were measured in duplicate using commercially available assays. Results: SDMA and sCr had intermediate and low IOI values of 0.87 and 0.28, respectively. The CD of SDMA and sCr, was 1.34 µg/dL and 0.89 µmol/L, respectively. The sample numbers required for estimation of an individual's HSP (with 90 and 95% CI) for SDMA and sCr were 8 and 45, and 2 and 12 sequential measurements, respectively. Conclusions and Clinical Importance: Based on our findings, in comparison to sCr, SDMA is better suited for use with population-based reference intervals. False-negative test results could occur when comparing a single test result from an individual to such intervals. Ideally CD should be used with sequential measurements.

Original languageEnglish (US)
Pages (from-to)736-742
Number of pages7
JournalJournal of veterinary internal medicine
Volume32
Issue number2
DOIs
StatePublished - Mar 1 2018
Externally publishedYes

Fingerprint

blood serum
creatinine
Creatinine
Dogs
dogs
Serum
Individuality
Animal Hospitals
testing
observational studies
kidney diseases
N,N'-dimethylarginine
Chronic Renal Insufficiency
Teaching Hospitals
Population
Observational Studies
kidneys
screening
Prospective Studies
monitoring

Keywords

  • Canine
  • Chronic kidney disease
  • Critical difference
  • Index of individuality
  • Serum creatinine
  • Symmetric dimethylarginine

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Kopke, M. A., Burchell, R. K., Ruaux, C. G., Burton, S. E., Lopez-Villalobos, N., & Gal, A. (2018). Variability of Symmetric Dimethylarginine in Apparently Healthy Dogs. Journal of veterinary internal medicine, 32(2), 736-742. https://doi.org/10.1111/jvim.15050

Variability of Symmetric Dimethylarginine in Apparently Healthy Dogs. / Kopke, M. A.; Burchell, R. K.; Ruaux, C. G.; Burton, S. E.; Lopez-Villalobos, N.; Gal, A.

In: Journal of veterinary internal medicine, Vol. 32, No. 2, 01.03.2018, p. 736-742.

Research output: Contribution to journalArticle

Kopke, MA, Burchell, RK, Ruaux, CG, Burton, SE, Lopez-Villalobos, N & Gal, A 2018, 'Variability of Symmetric Dimethylarginine in Apparently Healthy Dogs', Journal of veterinary internal medicine, vol. 32, no. 2, pp. 736-742. https://doi.org/10.1111/jvim.15050
Kopke, M. A. ; Burchell, R. K. ; Ruaux, C. G. ; Burton, S. E. ; Lopez-Villalobos, N. ; Gal, A. / Variability of Symmetric Dimethylarginine in Apparently Healthy Dogs. In: Journal of veterinary internal medicine. 2018 ; Vol. 32, No. 2. pp. 736-742.
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