VariableName VariableLabel Type Role Note Core
STUDYID Study Identifier Char Identifier Unique identifier for a study. Req
DOMAIN Domain Abbreviation Char Identifier Two-character abbreviation for the domain. Req
USUBJID Unique Subject Identifier Char Identifier Identifier used to uniquely identify a subject across all studies for all applications or submissions involving the product. Req
EXSEQ Sequence Number Num Identifier Sequence Number given to ensure uniqueness of subject records within a domain. May be any valid number. Req
EXTRT Name of Treatment Char Topic Name of the protocol-specified study treatment given during the dosing period for the observation. Req
EXGRPID Group ID Char Identifier Used to tie together a block of related records in a single domain for a subject. Perm
EXREFID Reference ID Char Identifier Internal or external identifier (e.g., kit number, bottle label, vial identifier). Perm
EXSPID Sponsor-Defined Identifier Char Identifier Sponsor-defined reference number. Perhaps pre-printed on the CRF as an explicit line identifier or defined in the sponsor’s operational database. Example: Line number on a CRF Page. Perm
EXLNKID Link ID Char Identifier Identifier used to link related records across domains. Perm
EXLNKGRP Link Group ID Char Identifier Identifier used to link related, grouped records across domains. Perm
EXTRT Name of Treatment Char Topic Name of the protocol-specified study treatment given during the dosing period for the observation. Req
EXCAT Category of Treatment Char Grouping Qualifier Used to define a category of EXTRT values. Perm
EXSCAT Subcategory of Treatment Char Grouping Qualifier A further categorization of EXCAT values. Perm
EXDOSE Dose Num Record Qualifier Amount of EXTRT when numeric. Not populated when EXDOSTXT is populated. Exp
EXDOSTXT Dose Description Char Record Qualifier Amount of EXTRT when non-numeric. Dosing amounts or a range of dosing information collected in text form. Example: 200-400. Not populated when EXDOSE is populated. Perm
EXDOSU Dose Units Char Variable Qualifier Units for EXDOSE, EXDOSTOT, or EXDOSTXT representing protocol-specified values. Examples: ng, mg, mg/kg, mg/m2. Exp
EXDOSFRM Dose Form Char Variable Qualifier Dose form for EXTRT. Examples: TABLET, LOTION. Exp
EXDOSFRQ Dosing Frequency per Interval Char Variable Qualifier Usually expressed as the number of repeated administrations of EXDOSE within a specific time period. Examples: Q2H, QD, BID. Perm
EXDOSRGM Intended Dose Regimen Char Variable Qualifier Text description of the intended schedule or regimen for the Intervention. Example: TWO WEEKS ON, TWO WEEKS OFF. Perm
EXROUTE Route of Administration Char Variable Qualifier Route of administration for the intervention. Examples: ORAL, INTRAVENOUS. Perm
EXLOT Lot Number Char Record Qualifier Lot Number of the intervention product. Perm
EXLOC Location of Dose Administration Char Record Qualifier Specifies location of administration. Examples: ARM, LIP. Perm
EXLAT Laterality Char Variable Qualifier Qualifier for anatomical location further detailing laterality of the intervention administration. Examples: LEFT, RIGHT. Perm
EXDIR Directionality Char Variable Qualifier Qualifier for anatomical location further detailing directionality. Examples: ANTERIOR, LOWER, PROXIMAL, UPPER. Perm
EXFAST Fasting Status Char Record Qualifier Indicator used to identify fasting status. Examples: Y, N. Perm
EXADJ Reason for Dose Adjustment Char Record Qualifier Describes reason or explanation of why a dose is adjusted. Perm
EPOCH Epoch Char Timing Trial Epoch of the Exposure record. Examples: RUN-IN, TREATMENT. Perm
EXSTDTC Start Date/Time of Treatment Char Timing The date/time when administration of the treatment indicated by EXTRT and EXDOSE began. Exp
EXENDTC End Date/Time of Treatment Char Timing The date/time when administration of the treatment indicated by EXTRT and EXDOSE ended. For administrations considered given at apoint in time (e.g., oral tablet, pre-filled syringe injection), where only an administration date/time is collected, EXSTDTC should be copied toEXENDTC as the standard representation. Exp
EXSTDY Study Day of Start of Treatment Num Timing Study day of EXSTDTC relative to DM.RFSTDTC. Perm
EXENDY Study Day of End of Treatment Num Timing Study day of EXENDTC relative to DM.RFSTDTC. Perm
EXDUR Duration of Treatment Char Timing Collected duration of administration represented in ISO 8601 duration format. Used only if collected on the CRF and not derived from start and end date/times. Perm
EXTPT Planned Time Point Name Char Timing 1. Text Description of time when administration should occur. 2. This may be represented as an elapsed time relative to a fixed reference point, such as time of last dose. See EXTPTNUM and EXTPTREF. Perm
EXTPTNUM Planned Time Point Number Num Timing Numerical version of EXTPT to aid in sorting. Perm
EXELTM Planned Elapsed Time from Time Point Ref Char Timing Planned elapsed time (in ISO 8601 format) relative to the planned fixed reference (EXTPTREF). This variable is useful where there are repetitive measures. Not a clock time. Represented in ISO 8601 duration format. Perm
EXTPTREF Time Point Reference Char Timing Name of the fixed reference point referred to by EXELTM, EXTPTNUM, and EXTPT. Examples: PREVIOUS DOSE, PREVIOUS MEAL. Perm
EXTPTREF Time Point Reference Char Timing Name of the fixed reference point referred to by EXELTM, EXTPTNUM, and EXTPT. Examples: PREVIOUS DOSE, PREVIOUS MEAL. Perm