Filariasis is caused by parasitic worms such as Wuchereria bancrofti and Brugia malayi.

The QBC method involves centrifuging a blood sample in a capillary tube coated with fluorescent dye, then examining under a microscope.

Clinical uses include:

Detecting microfilariae in peripheral blood.

Providing rapid diagnosis compared to conventional thick smear methods.

Supporting epidemiological studies in endemic regions.

The test is especially useful in areas where filariasis is common and for screening large populations.

Analyte: Presence of microfilariae (larval stage of filarial worms) in blood.

Normal Result: No microfilariae detected.

Abnormal Result: Microfilariae detected → confirms filarial infection.

Clinical Use:

Diagnoses filariasis quickly and accurately.

Differentiates between species based on morphology.

Supports treatment decisions and monitoring in endemic areas.