{"code":"C38462","name":"Activated Partial Thromboplastin Time","terminology":"ncit","version":"26.09d","conceptStatus":"DEFAULT","leaf":true,"active":true,"synonyms":[{"name":"Activated Partial Thromboplastin Time","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"CDISC","code":"SDTM-LBTEST"},{"name":"Activated Partial Thromboplastin Time","termType":"SY","type":"FULL_SYN","typeCode":"P90","source":"CDISC"},{"name":"APTT","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"CDISC","code":"SDTM-LBTESTCD"},{"name":"Activated Partial Thromboplastin Time","termType":"SY","type":"FULL_SYN","typeCode":"P90","source":"NCI"},{"name":"Activated Partial Thromboplastin Time","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"NCI"},{"name":"aPTT","termType":"AB","type":"FULL_SYN","typeCode":"P90","source":"NCI"},{"name":"Activated Partial Thromboplastin Time","type":"Preferred_Name","typeCode":"P108"}],"definitions":[{"definition":"A measurement of the length of time that it takes for clotting to occur when activating reagents are added to a biological specimen. The test is partial due to the absence of tissue factor (Factor III) from the reaction mixture.","code":"P325","type":"ALT_DEFINITION","source":"CDISC"},{"definition":"A measurement of the length of time that it takes for clotting to occur when activating reagents are added to a plasma specimen. The test is partial due to the absence of tissue factor (Factor III) from the reaction mixture.","code":"P97","type":"DEFINITION","source":"NCI"}],"properties":[{"code":"P322","type":"Contributing_Source","value":"CDISC"},{"code":"P366","type":"Legacy Concept Name","value":"Partial_Thromboplastin_Time_Test"},{"code":"P106","type":"Semantic_Type","value":"Laboratory Procedure"},{"code":"P207","type":"UMLS_CUI","value":"C0030605"}]}