| Reasons for Inconclusive Results | Year | ||||
| 2012 | 2013 | 2014 | 2015 | 2016 | |
| Contamination by blood | 1 | 1 | 9 | 36 | 34 |
| Undetermined diagnosis | 89 | 38 | 12 | 15 | 10 |
| Inflammatory process | 12 | 9 | 1 | 0 | 0 |
| Negative for neoplasm | 67 | 39 | 3 | 2 | 1 |
| Leishmaniosis test | 2 | 0 | 0 | 6 | 0 |
| Contamination by proteinaceous material | 0 | 0 | 0 | 2 | 0 |
| Contamination by fat material | 0 | 0 | 0 | 0 | 1 |
| Animal in heat | 0 | 0 | 0 | 2 | 0 |
| Total | 171 | 87 | 25 | 63 | 46 |