How It Is Done
In a direct sample, a sample of body fluid is taken from the affected area. In adults, these areas may include the Reference cervix Opens New Window, Reference urethra Opens New Window, 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 to collect a sample. 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 an instrument with curved sides (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.
In rare cases, a throat culture may be 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 urinating.
|By:||Reference Healthwise Staff||Last Revised: Reference May 1, 2012|
|Medical Review:||Reference Sarah Marshall, MD - Family Medicine
Reference Jeanne Marrazzo, MD, MPH - Infectious Disease