Microbiology• Updated 21 October 2026
Leptospirosis Test
A blood test for leptospirosis, often after exposure to floodwater.
Results: Same day to a few days Specimen: Blood
Quick Summary
Primary Purpose
To diagnose leptospirosis in people with fever and muscle pain.
What It Measures
IgM antibodies or bacterial DNA.
Preparation
No preparation.
Overview
Early tests may be negative; repeat testing can help.
Treatment often starts while waiting.
What It Measures
IgM
Recent infection.
PCR
Bacterial DNA early on.
How It's Performed
- 01
Blood sample
From a vein.
- 02
Test
ELISA, rapid test or PCR.
- 03
Result
Guides treatment.
Interpreting Results & Next Steps
Discuss with Doctor
Your doctor will explain what your result means and what happens next.
If values are High:
A positive result supports leptospirosis.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.