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Antibody; Chlamydia, IgM

CPT4 code

Name of the Procedure:

Antibody; Chlamydia, IgM
Common name(s): Chlamydia IgM Antibody Test


The Chlamydia IgM Antibody Test is a blood test used to detect the presence of IgM antibodies against Chlamydia bacteria. This helps in diagnosing recent or acute Chlamydia infections.


The procedure is aimed at identifying active or recent Chlamydia infections. The goals are to diagnose the infection accurately so that appropriate treatment can be initiated to alleviate symptoms and prevent complications.


  • Unusual genital discharge
  • Painful urination
  • Lower abdominal pain
  • Pain during intercourse in women
  • Testicular pain in men
  • Screening in sexually active individuals who may be at risk of sexually transmitted infections (STIs)


  • No special preparation is typically required.
  • Inform your doctor about any medications or supplements you are taking as they may influence the test results.

Procedure Description

  1. A healthcare provider will clean the injection site with an antiseptic wipe.
  2. A tourniquet may be applied to the upper arm to make the veins more prominent.
  3. Using a sterile needle, blood is drawn from a vein, usually in the arm.
  4. The collected blood is sent to a laboratory for analysis.
  5. The lab will test for the presence of Chlamydia IgM antibodies using specialized techniques.


The blood draw itself typically takes less than 5 minutes. However, the entire visit may last around 15-30 minutes.


This procedure is usually performed in a healthcare provider’s office, outpatient clinic, or laboratory.


  • Phlebotomist or nurse to collect the blood sample
  • Laboratory technician to analyze the blood sample
  • Physician or healthcare provider to interpret the results

Risks and Complications

  • Minor discomfort or pain at the needle site
  • Slight risk of bruising or bleeding at the injection site
  • Rare risk of infection


  • Accurate diagnosis of acute Chlamydia infection
  • Enables timely and appropriate treatment
  • Helps prevent complications associated with untreated Chlamydia, such as pelvic inflammatory disease (PID) and infertility


  • Most patients can resume normal activities immediately after the blood draw.
  • Follow any specific instructions provided by your healthcare provider.
  • Depending on the outcome, follow-up appointments may be scheduled to discuss treatment options.


  • Nucleic Acid Amplification Tests (NAATs) which are more commonly used for Chlamydia detection from urine or swab samples.
  • Enzyme Immunoassays (EIAs) and Direct Fluorescent Antibody (DFA) tests can be used but are generally less specific compared to NAATs.

Patient Experience

  • During the procedure, a quick needle prick is experienced which may cause brief discomfort.
  • Some patients might feel lightheaded or faint, but this is usually transient.
  • Maintain comfort by keeping hydrated and applying pressure at the injection site if bruising or bleeding occurs.
  • Pain is typically minimal to nonexistent following the procedure.

Medical Policies and Guidelines for Antibody; Chlamydia, IgM

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