How To Prepare
A chlamydia test is done on either a urine sample or fluid
(direct sample) collected from the area of the body that is most likely to be
infected. If your chlamydia test is being done on
- Urine sample: Do not urinate for 2 hours
before a urine sample is collected.
- Direct sample (usually from the cervix): A
woman should not douche or use vaginal creams or medicines for 24 hours before
having a chlamydia test.
How It Is Done
If a urine sample is collected for
nucleic acid amplification testing (such as PCR testing), do not urinate for 2
hours before the test. Do not wipe the genital area clean before urinating.
Collect the first part of your urine stream, immediately as you begin
In a direct sample, a sample of body
fluid is taken from the affected area. In adults, these areas may include the
urethra, vagina, rectum, or eye.
For men. To collect a
sample from the urethra or rectum, your doctor will insert a swab into the
opening of your urethra or rectum. A sample from the
urethra is more likely to detect chlamydia if a man has not urinated for at
least 2 hours before the sample is taken.
For women. To collect a sample from the cervix, you will take off your
clothes below the waist and drape a cloth around your waist. You will lie on
your back on an exam table with your feet raised and supported by stirrups.
This allows your doctor to examine your vagina and genital area. Your doctor
will insert a lubricated speculum into your vagina. The
speculum gently spreads apart the vaginal walls so the inside of the vagina and
the cervix can be looked at. Samples are collected from the cervix with a swab
or small brush.
- To collect a sample from your eye, your doctor will
gently brush the insides of your lower and upper eyelids with a swab.
There is also a self-test for women to collect a sample from their vagina and bring it to the lab for testing.
In rare cases, a throat culture may be done.