Table 1.

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.