Filariasis is an in vitro immunodiagnostic test used to detect Wuchereria bancrofti antigen in whole blood, serum, or plasma. The test employs an antibody specific for W. bancrofti.

Lymphatic filariasis does not always result in clinical symptoms so the most accurate way to diagnosis is using a blood test.

Filariasis card test does not require laboratory facilities.

The test uses finger-prick blood taken at any time of the day without regard to nocturnicity of parasite. Traditionally testing was restricted to the hours of 10 pm and 2 am when the parasite appeared in the patient’s blood.

The test detects filarial antigen in whole blood, serum or plasma.

The test yields results in 10 minutes.