Number of appropriate and inappropriate tests suggested by National Association of Clinical Biochemistry best-practice guidelines that were requested as part of a tumour marker panel
| Test requested | No of appropriate tests | No of inappropriate tests | No of tests with no clinical details stated |
| α-Fetoprotein | 9 | 128 | 3 |
| CA125 | 43 | 284 | 15 |
| CA15-3 | 0 | 15 | 3 |
| CA19-9 | 13 | 242 | 13 |
| Carcinoembryonic antigen | 38 | 369 | 12 |
| Prostate-specific antigen | 107 | 9 | 1 |
| Total | 210 | 1047 | 47 |