Which STD Screen?

Although correct use of condoms does reduce the risk of STIs, the risk is not completely eliminated as condom failure can occur and STIs can be transmitted by other sexual activities.

Infections such as herpes and HPV can still be transmitted by skin to skin genital contact even with condom usage. In addition, STIs often occur together. Therefore, it is always worth having full screens.

If you're unsure which STD screen you may need, you can find out more below.


  • Discreet & professional service
    Real names not needed
  • Private clinics with qualified specialists
    Walk-in appointments and online bookings are available
  • Fast STD screens offered
    Early STD screening including HIV from 10 days post contact
  • Fast track chlamydia & gonorrhoea tests available
    Test results are back within 4-5 hours with optional extras
  • Male/Female HPV testing for high-risk subtypes
    STD Testing available by a simple swab
  • CQC registered
    Registered and regulated by the Care Quality Commission

Oral Intercourse

The main risks associated with oral sex, both receiving and giving are:

  • Chlamydia
  • Gonorrhoea
  • Syphilis
  • Herpes

There is very low risk of acquiring HIV or Hepatitis B from oral sex, unless there are cuts to the mouth or genitalia or bleeding from the gums.
Receiving oral sex carries a higher risk of STIS.

Vaginal Intercourse

The main risks associated with vaginal sex are:

  • Chlamydia
  • Gonorrhoea
  • HIV
  • Hepatitis B
  • Hepatitis C
  • Syphilis
  • Herpes
  • HPV (wart virus)

In men, it can lead to Non Specific Urethritis, which is caused by wide variety of organisms such as Mycoplasma genitalum, Ureaplasma urealyticum and Trichomonas vaginalis.

In women, it can lead to Trichomonas vaginalis infection, which causes abnormal vaginal discharge. Although Bacterial vaginosis and thrush are not sexually transmitted infection, they can be precipitated in women by sexual intercourse.

Anal Intercourse

Anal intercourse, especially receiving anal sex, has the highest risk of acquiring STIs, particularly HIV.

The main risks are:

  • Chlamydia
  • Gonorrhoea
  • HIV
  • Hepatitis B
  • Hepatitis C
  • Syphilis
  • Herpes
  • HPV

Fingering/Fisting

If there are cuts or sores on the fingers or around the vagina or anus, then there is a small risk of acquiring Hepatitis B, HIV and Hepatitis C.

Herpes and HPV can also be caught by this activity as they are spread by skin to skin contact.

Sharing Sex Toys

Chlamydia and Gonorrhoea are found in vaginal secretions and semen and can therefore be transferred by sharing sex toys.

If there are cuts/sores around the penis, vagina or anus, then there is a small risk of acquiring Hepatitis B, Syphilis, HIV and Hepatitis C.

Find your nearest CityDoc

With over 150 clinics nationwide, there is a CityDoc clinic to suit all of your travel needs

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Receiving STD results

During your appointment test results and timings will be discussed. All test results are sent to our London based Harley Street laboratory for analysis and results will be sent directly to you once complete. If your results are positive, our specialist team will be in contact and provide NHS referrals if required. We provide treatment nationwide for Chlamydia and in our London flagship clinics we offer treatment for both Chlamydia and Gonorrhoea.

Receiving results

Sexual health FAQ’s

Are you unsure on the difference between an STD and STI? What happens if I have a positive result? If you are looking for answers to these and other sexual health questions, we have put together a list of FAQ’s for you.

Sexual health FAQ’s

CityDoc Hitchin (formally Vaccination UK) – Flagship Clinic

5 Portmill Lane,
Hitchin,
SG5 1DJ
Opening Hours:
Mon10:00 to 17:00
Tue8:30 to 13:30
Wed9:00 to 12:30
Thu9:00 to 17:00
Fri9:00 to 12:30
Sat9:00 to 13:00
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London Bridge (Shard) – Flagship Clinic

52 Weston Street,
London,
SE1 3RB
Opening Hours:
Mon9:00 to 17:00
Tue9:00 to 17:00
Wed9:00 to 17:00
Thu9:00 to 17:00
Fri9:00 to 17:00
Sat9:00 to 16:00
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Clinic Details

Canary Wharf – Flagship Clinic

Unit 6,
Port East Building,
14 Hertsmere Road,
London,
E14 4AF
Opening Hours:
Tue9:00 to 17:00
Thu9:00 to 17:00
Canary Wharf
Clinic Details

Sexual health enquiries

If you need further help regarding any sexual health matters, simply contact us below

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