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Chlamydia is the commonest sexually transmitted infection in the UK. 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.

The Illness

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.

Diagnosis of Chlamydia Infection

The test of choice is NAAT test (Nucleic acid amplification test), as it is highly sensitive. This can be performed on a urine sample (as long as the bladder has not been emptied for 2 hours) or a swab from the vagina in women and the penis in men. 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.


Chlamydia is treated with a single dose of an oral antibiotic.

Treatment for chlamydia is at available at CityDoc Clinics Nationwide.. There is a mandatory sexual health consultation fee if no sexual screen is purchased, plus the cost of the treatment itself.

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

Chlamydia/Gonorrhoea Testing

Name of TestAvailability / TurnaroundPrice
Fast Chlamydia & Gonorrhoea Test
From 14 days
Central London - Same Day

Nationwide - 2 to 3 Working Days

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