TITLE

Tailored reference limits for urine corticoid:creatinine ratio in dogs to answer distinct clinical questions

AUTHOR(S)
Zeugswetter, F.; Bydzovsky, N.; Kampner, D.; Schwendenwein, I.
PUB. DATE
December 2010
SOURCE
Veterinary Record: Journal of the British Veterinary Association;Dec2010, Vol. 167 Issue 26, p997
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
To establish reference intervals for the urinary corticoid:creatinine ratio (UCCR) determined by chemiluminometric immunoassay, UCCR was measured by this method in 50 healthy dogs. To assess the diagnostic performance of different cut-off levels, the UCCR of 66 dogs with hyperadrenocorticism and 87 dogs with diseases mimicking hyperadrenocorticism were used to construct a receiver operating characteristic (ROC) curve. The upper reference limit derived from morning samples in healthy dogs was 30.81 × 10. The area under the ROC curve was 0.94. The diagnostic cut-off with the highest negative likelihood ratio was 26.5 × 10 (sensitivity 1, specificity 0.54), whereas the cut-off with the highest positive likelihood ratio was 161.2 × 10 (specificity 0.988, sensitivity 0.515). The application of these two different diagnostic cut-offs eliminated the necessity to perform additional tests in 53 per cent of the patient population.
ACCESSION #
66291166

 

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