Medicine Among the following, earliest test to be positive in leptospirosis is: A Microagglutination test (MAT) B Leptospira culture of blood C IgM ELISA of serum D Macroagglutination test 💡 Explanation Among the following, earliest test to be positive in leptospirosis is: ✓ Correct Answer: C. IgM ELISA of serum