Accuracy of the SNAP® cPL™ Test
Repeatability (Qualitative Precision)
Repeatability studies were conducted by running multiple replicates of five canine serum pools on SNAP cPL devices. The canine pancreatic-specific lipase (cPL) concentration of each canine serum pool was measured using the Spec cPL assay. SNAP cPL devices were run and visually interpreted by a single operator and results were tabulated as either N (Normal) or A (Abnormal). Within-Day and Day-to-Day repeatability were determined by running n=10 replicates per pool over three days. The results of this study are guidelines.
SNAP cPL Test—Repeatability (Qualitative Precision)

Agreement with Spec cPL® Reference Method
A user group study was conducted to evaluate agreement between SNAP cPL visual results and Spec cPL quantitative results.
- Study Design:
- Twenty canine serum samples with known Spec cPL concentrations were assayed on SNAP cPL devices.
- Each device was visually interpreted twice by each of 14 veterinary professionals for a total of 28 observations per sample. (Total n=560)
- Veterinary professionals were blinded as to the Spec cPL concentrations of the samples.
Results:
96% (536) of the interpretations were correct.
Statistical significance:
With 95% confidence, there is 94.0–97.4% agreement between the SNAP cPL and Spec cPL methods.
Video:
White paper:
IDEXX SNAP® cPL™ Test—Reference Laboratory Accuracy Pet-side (PDF)