Reasons given for false positivity by specialist review
| Count | % | |
| PEP | 415 | 26 |
| PrEP | 27 | 2 |
| Hepatitis B | 20 | 1 |
| Incorrect ICD-10 | 1152 | 71 |
| No information | 506 |
ICD-10, International Classification of Diseases, 10th Revision; PEP, postexposure prophylaxis; PrEP, pre-exposure prophylaxis.