Skip to content

    Sexual Conditions Health Center

    Font Size
    A
    A
    A

    Chlamydia Tests

    Chlamydia tests use a sample of body fluid or urine to see whether chlamydia bacteria (Chlamydia trachomatis) are present and causing an infection. Chlamydia is the most common bacterial sexually transmitted infection (STI) in the United States.

    Tests used to find a chlamydia infection include:

    • Nucleic acid amplification tests (NAAT). These tests find the genetic material (DNA) of chlamydia bacteria. These tests are very good at identifying chlamydia. A test that is positive almost always means the problem is there and is unlikely to be a false-positive test result. A polymerase chain reaction (PCR) test is an example of a nucleic acid amplification test. This test can also be done on a urine sample.
    • Chlamydia culture. A culture is a special cup that allows the chlamydia bacteria to grow. Results take longer (5 to 7 days) than the other tests. The culture must be done in a lab.

    Why It Is Done

    A test for chlamydia is done to:

    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 a:

    • 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.
    1 | 2 | 3 | 4

    WebMD Medical Reference from Healthwise

    Last Updated: June 04, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

    Today on WebMD

    couple kissing
    See pictures and get the facts.
    husband taking prescription painkillers
    13 things that can kill your sex drive.
     
    close up of cold sore
    How to stop them from spreading.
    Condom Quiz
    What are the symptoms?
     

    HIV Myth Facts
    Slideshow
    STD Overview
    Slideshow
     
    Man tearing a condom packet
    Quiz
    things your guy wish you knew slideshow
    Slideshow
     

    Thoughtful man sitting on bed
    Quiz
    Girls Puberty 10
    Quiz
     
    Couple in bed
    Article
    Young couple holding hands
    Quiz