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Chlamydia, Blood Test

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About Our Chlamydia, Blood Test

Note: Fasting is not required for this test.

Chlamydia is a common bacterial STD that is caused by the bacterium Chlamydia trachomatis. This blood test is used to determine if there are IgM antibodies to chlamydia in your blood. Since chlamydia is not a blood-borne disease, this type of test should not be used to diagnose chlamydia infections of the urogenital area, but rather chlamydia infections that are affecting non-genital regions.

Chlamydia is often asymptomatic—as many as 75% of women and 50% of men do not have symptoms, which is part of why it is so easily spread. 

Early detection of chlamydia is key because untreated chlamydia can lead to ectopic pregnancy or pelvic inflammatory disease in women which can cause infertility. In men, untreated chlamydia can cause an cause a condition called nongonococcal urethritis (NGU) in the epididymis, urethra or rectum. Chlamydia can be easily cured with antibiotics if treated early. Mothers with chlamydia can pass the infection on to their babies during childbirth, which can cause eye infections, blindness or pneumonia to the baby.

Gonorrhea, another common sexually transmitted disease, often occurs together with chlamydia, so it is wise to be tested for both.


Symptoms of chlamydia include:

  • Painful urination
  • Itching and burning in/around vagina or penis
  • Bleeding between periods/painful periods
  • Women may experience pain during intercourse
  • Small amounts of clear/cloudy discharge from penis
  • Abnormal vaginal discharge (may have odor)
  • Premature childbirth

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