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GTD Indications Diagnosis Carrier / Cascade Testing GTD Samples Accepted Blood DNA GTD Test Methodology MLPA Sequencing Generic Test name (cms title) Alpha-1-Antitrypsin Deficiency GTD Test type Single Gene GTD Location Trillium Health Partners - Credit Valley Hospital GTD Gene/Platform/Region List SERPINA1 GTD Category Respiratory GTD Disease/Condition Alpha-1-Antitrypsin Deficiency, AAT Deficiency, A1AT Deficiency, AATD, Alpha-1 Antiprotease Deficiency