試題詳解

5. 一住安養院老人於身上、四肢及生殖器發生(如圖A及圖B)劇癢皮疹已有2個月，身體檢查發現vital signs都正常。應作何種檢查以確定診斷？
(A) Complete blood count
(B) Serum tissue transglutaminase level
(C) Skin biopsy for direct immunofluorescence microscopy
(D) Microscopic evaluation of skin scraping
(E) Thyroid function test .