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Antibody; Yersinia

CPT4 code

Name of the Procedure:

Antibody testing for Yersinia infection


Antibody testing for Yersinia involves a blood test to detect the presence of antibodies against Yersinia bacteria. This helps diagnose infections caused by this pathogen.


  • Medical Condition: Yersiniosis, an infection usually caused by Yersinia enterocolitica or Yersinia pseudotuberculosis.
  • Goals: To confirm a suspected Yersinia infection and guide appropriate treatment.


  • Persistent diarrhea, abdominal pain, or fever suspected to be due to Yersinia infection.
  • A history of consuming contaminated food or having contact with infected animals.
  • Presence of symptoms typically linked to Yersinia, such as gastrointestinal issues and fever.


  • Patient Instructions: No special preparation, such as fasting, is needed. Patients can eat and drink normally before the test.
  • Assessments: A review of medical history and symptoms may be conducted.

Procedure Description

  1. A healthcare professional will clean the skin over a vein in the patient's arm.
  2. A blood sample is collected using a sterile needle.
  3. The blood sample is sent to a laboratory to test for the presence of antibodies against Yersinia.


The blood draw typically takes about 10-15 minutes.


Performing the blood draw can occur in various healthcare settings such as:

  • Hospital
  • Outpatient clinic
  • Diagnostic laboratory


  • Phlebotomist or nurse to collect the blood sample.
  • Lab technician to analyze the blood sample.

Risks and Complications

  • Common Risks: Minor bruising or discomfort at the needle site.
  • Rare Risks: Infection at the needle site, excessive bleeding, or fainting.


  • Expected Benefits: Accurate diagnosis of Yersinia infection, leading to targeted treatment.
  • Timing: Results are typically available within a few days.


  • Post-procedure Care: Bandage may be applied to the puncture site; patients can usually resume normal activities immediately.
  • Restrictions: None specific to the blood draw.
  • Follow-up: Based on results, further medical consultation or treatment may be advised.


  • Other Options: Stool cultures or polymerase chain reaction (PCR) tests to directly identify Yersinia bacteria.
  • Pros and Cons: Stool cultures and PCR may take longer and can be more expensive but can provide direct evidence of infection.

Patient Experience

  • During Procedure: Slight prick or discomfort when needle is inserted.
  • After Procedure: Mild tenderness or bruising at the needle site; generally manageable discomfort.
  • Pain Management: Over-the-counter pain relievers if needed for minor discomfort.