Chlamydia trachomatis is one of the most common sexually transmitted pathogens. It is a major cause of cervicitis, urethritis, endometritis and pelvic inflammatory disease in women. Serious complications can result in salpingitis, infertility and ectopic pregnancy. If transmitted to infants during birth, chlamydia can cause conjunctivitis and pneumonia. 50 to 70 percent of infected women are asymptomatic, which makes diagnosis extremely important. Chlamydia are related to gram-negative bacteria. They are intracellular in nature and are unable to synthesize adenosine triphosphate (ATP). The extracellular elementary body form is infectious while the intracellular reticulate form is metabolically active. Epidemiological patterns indicate infections of Chlamydia trachomatis parallel or exceed those of Neisseria gonorrhea and the two often occur together. The disease cuts across the socioeconomic spectrum. The primary method for detection of Chlamydia is growth of the organism in cell culture. Other methods include direct fluorescence assays (DFA), Enzyme Immunoassays (EIA) and nucleic acid probing. The Chlamydia Test Device (Swab) is a rapid and sensitive direct binding test for visual detection of Chlamydia trachomatis antigen in endocervical or endourethral swab specimens.