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About the test
What is this test done for?
Leptospira IgM (ELISA) is a blood test used for detecting antibodies against Leptospira bacteria, which is responsible for leptospirosis.
Why is it Done?
This is a routine blood test done for diagnosing leptospirosis. Presence of leptospira IgM in the blood indicates recent infection of Leptospira bacteria and it is the most probable cause for ongoing fever.
When should it be performed?

This test is performed when a patient has symptoms of leptospirosis

  • High grade fever (Temperature > 103oF)
  • Chills and rigors
  • Headache and retro-orbital pain (pain behind eyes)
  • Red eye
  • Muscle pains
  • Nausea
  • Vomiting
  • Loss of appetite
  • If kidneys and liver become infected, the symptoms are more severe
    • Weight loss
    • Swollen ankles or hands
    • Swelling around liver, which is painful
    • Reduced urination
    • Fast heartbeat
    • Shortness of breath
    • Jaundice
  • If brain becomes infected, symptoms are
    • High grade fever
    • Vomiting
    • Neck stiffness or tightness
    • Drowsiness
    • Aggressive behavior
    • Confused mental state
    • Seizures or convulsions
    • Inability to speak
    • Aversion to light
How is it done
A blood sample will be collected from a vein in your arm. No special preparations like fasting required.

The test result is normal or negative; if the report reads leptospira IgM antibodies are absent. It means

  • No infection of Leptospira bacteria

The test result is positive; if report reads leptospira IgM antibodies are present. It means

  • Leptospirosis
Other Tests
  • Blood culture
    • It is a specialized blood test carried out to find out the cause of current ongoing infection
    • Positive for Leptospira means leptospirosis
    • It is a highly specialized blood test carried out to check for DNA of Leptospira bacteria
    • Positive results indicate Leptospirosis
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