lupus band test การใช้

• "' Lupus band test "'is done upon skin biopsy, with direct immunofluorescence staining, in which, if positive, IgG and complement depositions are found at the dermoepidermal junction.
• This test can be helpful in distinguishing systemic lupus erythematosus ( SLE ) from cutaneous lupus, because in SLE the lupus band test will be positive in both involved and uninvolved skin, whereas with cutaneous lupus only the involved skin will be positive.