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- Author or Editor: Sheila R. Teague x
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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° and 24°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° or −80°C were stable for at least 21 days. Also, long-term prednisone administration to dogs did not significantly affect serum cPLI concentrations.