Whether or not to return STI results for the third British National Survey of Sexual Attitudes and Lifestyles (Natsal-3): infection-specific issues (as of 2009)
| Free NHS testing available | Clinical standard for treatment available | Prevalence of undiagnosed infections | Sample type and testing is of clinical diagnostic standard | |
| Chlamydia trachomatis | Yes | Yes | High | No* |
| Neisseria gonorrhoeae | Yes | Yes | Low | No* |
| HIV | Yes | Yes | Low† | No |
| HPV | No‡ | No | High | NA§ |
| Mycoplasma genitalium | No‡ | No | Unknown | NA§ |
Bold type shows factors that favour named testing.
↵* Due to delay and batch testing.
↵† The Health Protection Agency estimates that 24% of HIV-infected people are unaware of their infection in the UK.17
↵‡ Not usually performed.
↵§ A clinical standard for testing is not currently available.
HPV, human papillomavirus; NA, not applicable; STI, sexually transmitted infection.