Chlamydia

Chlamydia is the most common sexually transmitted infection in the UK.

What is STD?

STD stands for sexually transmitted disease and are also known as STI (sexually transmitted infection). The infections are passed from person to person through sexual contact. If you are worried you may have an STD, are looking for more information, click below

Read more

Find your nearest CityDoc

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

Find a clinic

It is caused by the bacteria Chlamydia trachomatis and is acquired through anal, oral or vaginal intercourse. It can also be acquired through sharing sex toys.

Chlamydia Tests can be taken from 14 days post-contact and cost £120. Same day results are possible from London flagship clinics only (if taken before 12pm). Results from clinics nationwide take 2 to 5 days.


  • 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

In 70% of women and 50% of men, Chlamydia does not cause any symptoms at all. If symptoms occur, they usually develop 1-3 weeks after acquiring the infection.

Symptoms in Men

  • Pain/discomfort on passing urine
  • Discharge from the penis
  • Can affect the testicles-causing pain and swelling.
  • Can also cause prostatitis (infection of the prostate gland).

Symptoms in Women

  • Pain on passing urine
  • Abnormal vaginal discharge
  • Bleeding in between periods
  • Bleeding after intercourse
  • Pain on intercourse
  • Lower abdominal or pelvic pain

In women, untreated Chlamydia infection can cause Pelvic Inflammatory Disease, which may damage the fallopian tubes. This is a risk factor for ectopic pregnancies (where the pregnancy occurs outside the womb) or infertility.

As well as affecting the genital region, Chlamydia can also cause infection of the throat and rectum, which is particularly likely to occur after oral intercourse and anal intercourse respectively.

The test of choice is the NAAT test (Nucleic acid amplification test), as it is highly sensitive. This is performed by a urine sample in men (as long as the bladder has not been emptied for 1 hour) or a swab from the vagina in women. For individuals with rectal or throat symptoms or who have had anal or rectal exposure, a rectal swab or a throat swab should also be performed.

Treatment for chlamydia is available at select CityDoc clinics, and is treated with either a course or single dose of an oral antibiotic.

With Positive Chlamydia cases, no test of cure is required, a part from in the case of positive rectal chlamydia and pregnant clients. If a test of cure is carried out, it is recommended a minimum period of 3 weeks has elapsed.

Name of TestResults / TurnaroundPrice
Chlamydia & Gonorrhoea Test
From 14 days
London - Same Day Result (If taken before 12pm)

Nationwide service - result in 2 to 5 days
£120
Herpes Test3 to 5 days£120
Enhanced Urine / Swab Test
Chlamydia, gonorrhoea, herpes, trichomonas, Ureaplasma, gardnerella and mycoplasma
3 to 5 days£260

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

Sexual health enquiries

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

Sexual health enquiries Call Us

Travel Vaccinations

Sexual Healthcare

Health Screening

Covid 19 Testing