[Celiac News] In a patient who develops coeliac symptoms, is it possible to have

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In a patient who develops coeliac symptoms, is it possible to have a normal ttg blood test before their symptoms develop? ie does a previous normal ttg preclude the need to repeat if a patient develops new symptoms?
            

We found no studies or guidelines to answer the first part of this question.  However, the following general information may be of some relevance. (Source: NLH Question Answering Service)
            

http://www.clinicalanswers.nhs.uk/index.cfm?question=8339