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GTD Indications Diagnosis Carrier / Cascade Testing GTD Samples Accepted Blood DNA Saliva GTD Test Methodology Sequencing GTD Methodology Notes Targeted Mutations; FVL/prothrombin/F2 (G20210GA) GTD Notes Saliva samples must be provided in oragene, OG-600 kits; UHN does not provide collection kits but they can be obtained directly from DNA genotek (www.dnagenotek.com) Generic Test name (cms title) Thrombosis GTD Test type Targeted Variant GTD Location University Health Network GTD Gene/Platform/Region List F2 (NM_00506.4:c.*_97G>A (Prothrombin G20210A)), F5 (NM_000130.3: p.Arg534Gln (Factor V Leiden R506Q)), MTHFR (NM_005957.3: p.Ala222Val (MTHFR C677T)) GTD Category Hematology GTD Disease/Condition prothrombin deficiency, Prothrombin Thrombophilia, F2-related thrombophilia, factor II-related thrombophilia, prothrombin 20210G>A thrombophilia, FII, factor V leiden deficiency, factor V leiden thrombophilia, FV