Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Parasites - Lymphatic Filariasis ?
    ### Response:
    The standard method for diagnosing active infection is the identification of microfilariae in a blood smear by microscopic examination. The microfilariae that cause lymphatic filariasis circulate in the blood at night (called nocturnal periodicity). Blood collection should be done at night to coincide with the appearance of the microfilariae, and a thick smear should be made and stained with Giemsa or hematoxylin and eosin.
    