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  • Title: Stability of canine pancreatic lipase immunoreactivity concentration in serum samples and effects of long-term administration of prednisone to dogs on serum canine pancreatic lipase immunoreactivity concentrations.
    Author: Steiner JM, Teague SR, Lees GE, Willard MD, Williams DA, Ruaux CG.
    Journal: Am J Vet Res; 2009 Aug; 70(8):1001-5. PubMed ID: 19645581.
    Abstract:
    OBJECTIVE: To evaluate stability of canine pancreatic lipase immunoreactivity (cPLI) in serum samples and to determine the effect of long-term administration of prednisone on serum cPLI concentrations. SAMPLE POPULATION: 8 canine serum samples for the stability evaluation and serum samples obtained from 6 healthy young adult heterozygous (carrier) dogs with X-linked hereditary nephritis for determining the effect of prednisone administration. PROCEDURES: To evaluate stability of serum cPLI concentration, an aliquot of each serum sample was stored at each of 4 temperatures between -80 degrees and 24 degrees C; samples were analyzed on days 0, 3, 7, 14, and 21. To determine the effect of long-term prednisone administration, pretreatment serum samples were obtained (days 0 and 14) and prednisone was administered (2.2 mg/kg, q 24 h, PO) on days 15 through 42, with serum samples obtained on days 28 and 42. Additional serum samples were obtained on days 56 and 70. RESULTS: Mean serum cPLI concentrations did not change significantly from day 0 to day 21 regardless of storage temperature. Serum cPLI concentrations in dogs after prednisone administration were within the reference range for all dogs at all time points, and results of repeated-measures ANOVA revealed that serum cPLI concentrations did not change significantly over time. CONCLUSIONS AND CLINICAL RELEVANCE: Serum cPLI concentrations measured in canine serum samples stored at room temperature, in a refrigerator, or in a freezer at -20 degrees or -80 degrees C were stable for at least 21 days. Also, long-term prednisone administration to dogs did not significantly affect serum cPLI concentrations.
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