Dark ground microscopy is used for

NEET SS
#1

Dark ground microscopy is used for -

    1. TPI
    1. FTA - ABS
    1. Kahn’s test
    1. VDRL

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exp:

  • In TPI test, the serum of patient is incubated with complement and T. pallidum maintained in a complex medium anaerobically. If the antibodies are present, the treponemes are immobilized, that is, rendered nonmotile, when examined under dark ground illumination.