<prompt> RAST test is used in diagnosis ofAllergic dermatitisSeborrhoeicdematitisMycosis fungoidesSquamous cell carcinoma  <response>: Ans. is a i.e., Allergic dermatitis Diagnostic tests in allergic contact dermatitisDiagnostic Tests if indicatedo Patch testingo Photopatch testingo Tests for immediate hypersensitivityy Radioallereosorbent assav test RASTy Open and semiopen patch tests read at 10 and 45 minutesy Prick testy Scratch-chamber testo Repeat open application use testo Potassium hydroxide examination to fungi, glass fiberso Fungal, bacterial, and viral smears and cultureso Skin biopsieso Dimethylglyoxime test for detecting nickel, other tests detection of chromates and formaldehydeo Chemical analysis 