Diagnosis of Leptospirosis
The disease can be diagnosed in different ways, depending on which stage it is in.
Genetic detection technique (PCR). To measure the bacteria in the blood during the first week.
Urine culture. To measure the bacteria during the second week, as it has now passed to the urine.
Antibody measurement. From the second week, the body's immune response to the bacteria can also be measured by antibodies that help diagnosis, although these do not tend to be definitive.