• Diagnosis of Chlamydia

    Sexually Transmitted Chlamydia

    A swab test from the discharge of the penis or the cervix may be done. A urine sample may also be used. You may also be tested for others STIs , including gonorrhea , syphilis, and HIV .

    Other Forms of Chlamydial Infection

    Diagnosing other forms of chlamydial infection depend upon a combination of your medical history (such as exposures to birds, sexual partners, foreign travel), your physical examination, and a collection of lab tests. In some cases, making the diagnosis can be quite difficult.
    • Psittacosis—The diagnosis of psittacosis is difficult when an obvious history of exposure to birds is not present. There is a lab test that identifies antibodies to the germ.
    • Trachoma—This is diagnosed by culturing a swab from the conjunctiva, examining cells scraped from the conjunctiva, and doing an eye exam.
    Definitive diagnosis uses a number of different techniques. These may include taking specimens from infected areas, identifying molecules associated with the germ or antibodies to the germ, and recognizing strands of nucleic acid unique to the germ.


    Canadian Centre for Occupational Health and Safety. Psittacosis. Canadian Centre for Occupational Health and Safety website. Available at: http://www.ccohs.ca/oshanswers/diseases/psittacosis.html . Accessed October 6, 2012.

    Canadian Paediatric Society. Recommendations for the prevention of neonatal ophthalmia. Canadian Paediatric Society website. Available at: http://www.cps.ca/english/statements/ID/ID02-03.htm . Updated March 2008. Accessed October 6, 2012.

    Chlamydia fact sheet. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/std/chlamydia/STDFact-Chlamydia.htm . Updated Feburaray 8, 2012. Accessed October 6, 2012.

    Chlamydia genital infection. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what.php . Updated September 7, 2012. Accessed October 6, 2012.

    Chlamydia. National Institute of Allergy and Infectious Diseases website. Available at: http://www.niaid.nih.gov/topics/chlamydia/understanding/Pages/cause.aspx . Updated August 20, 2010. Accessed October 6, 2012.

    Chlamydia. National Women's Health Organization website. Available at: http://www.womenshealth.gov/publications/our-publications/fact-sheet/chlamydia.cfm . Updated July 8, 2011. Accessed October 6, 2012.

    Centers for Disease Control and Prevention. Sexually Transmitted Diseases Treatment Guidelines, 2010. MMWR 2010;59(No. RR-12):1-110.

    Cook RL, Hutchison SL, Ostergaard L, et al. Systematic review: noninvasive testing for chlamydia trachomatis and neisseria gonorrhoeae. Ann Intern Med . 2005;142:914-925.

    International Trachoma Initiative website. Available at: http://www.trachoma.org/ . Accessed October 6, 2012.

    Miller KE. Diagnosis and treatment of chlamydia trachomatis infection. Am Fam Physician . 2006;73:1411-1416.

    Ornithosis. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what.php . Updated November 30, 2009. Accessed October 6, 2012.

    Trachoma. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/what.php . Updated June 21, 2012. Accessed October 6, 2012.

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