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
MOSEQ Sequence Number Num Identifier Sequence number given to ensure uniqueness of subject records within a domain. May be any valid number. Req
MOGRPID Group ID Char Identifier Used to tie together a block of related records in a single domain for a subject. Perm
MOREFID Reference ID Char Identifier Internal or external procedure identifier. Perm
MOSPID Sponsor-Defined Identifier Char Identifier Sponsor-defined reference number. Perhaps preprinted on the CRF as an explicit line identifier or defined in the sponsor's operational database. Example: Line number from the procedure or test page. Perm
MOLNKID Link ID Char Identifier Identifier used to link results of a procedure to the procedure performed. Perm
MOTESTCD Test or Examination Short Name Char Topic Short name of the measurement, test, or examination described in MOTEST. It can be used as a column name when converting a dataset from a vertical to a horizontal format. The value in MOTESTCD cannot be longer than 8 characters, nor can it start with a number (e.g., "1TEST" is not valid). MOTESTCD cannot contain characters other than letters, numbers, or underscores. Examples: "VOLUME", "INTP". Req
MOTEST Test or Examination Name Char Synonym Qualifier Verbatim name of the test or examination used to obtain the measurement or finding. The value in MOTEST cannot be longer than 40 characters. Examples: "Volume", "Interpretation". Req
MOCAT Category for Test Char Grouping Qualifier Used to categorize observations across subjects. Perm
MOSCAT Subcategory for Test Char Grouping Qualifier A further categorization. Perm
MOPOS Position of Subject Char Record Qualifier Position of the subject during a measurement or examination. Examples: "SUPINE", "STANDING", "SITTING". Perm
MOORRES Result or Finding in Original Units Char Result Qualifier Result of the procedure measurement or finding as originally received or collected. Exp
MOORRESU Original Units Char Variable Qualifier Original units in which the data were collected. The unit for MOORRES. Perm
MOSTRESC Character Result/Finding in Std Format Char Result Qualifier Contains the result value for all findings, copied or derived from MOORRES in a standard format or standard units. MOSTRESC should store all results or findings in character format; if results are numeric, they should also be stored in numeric format in MOSTRESN. Exp
MOSTRESN Numeric Result/Finding in Standard Units Num Result Qualifier Used for continuous or numeric results or findings in standard format; copied in numeric format from MOSTRESC. MOSTRESN should store all numeric test results or findings. Perm
MOSTRESU Standard Units Char Variable Qualifier Standardized unit used for MOSTRESC or MOSTRESN. Perm
MOSTAT Completion Status Char Record Qualifier Used to indicate a test was not done, or a measurement was not taken. Should be null if a result exists in MOORRES. Perm
MOREASND Reason Test Not Performed Char Record Qualifier Describes why a measurement or test was not performed. Examples: "BROKEN EQUIPMENT" or "SUBJECT REFUSED". Used in conjunction with MOSTAT when value is "NOT DONE". Perm
MOXFN External File Path Char Record Qualifier File path to the external file. Perm
MONAM Vendor Name Char Record Qualifier Name or identifier of the laboratory or vendor who provided the test results. Perm
MOLOC Location Used for Measurement Char Record Qualifier Location relevant to the collection of the measurement. Examples: "BRAIN", "KIDNEY", "LIVER", etc. Perm
MOLAT Specimen Laterality within Subject Char Variable Qualifier Qualifier for laterality of the specimen within the subject for paired specimens. Examples: "LEFT", "RIGHT", "BILATERAL". Perm
MODIR Specimen Directionality within Subject Char Variable Qualifier Qualifier for directionality of the specimen within the subject. Examples: "DORSAL", "PROXIMAL". Perm
MOPORTOT Portion or Totality Char Variable Qualifier Qualifier for anatomical location or specimen further detailing the portion of totality which means arrangement of, or apportioning of. Examples: "ENTIRE", "PARTIAL". Perm
MOMETHOD Method of Procedure Test Char Record Qualifier Method of the test or examination result. Perm
MOANMETH Analysis Method Char Record Qualifier Analysis method applied to obtain a summarized result. Example: "STEREOLOGY". Perm
MOLOBXFL Last Observation Before Exposure Flag Char Record Qualifier Operationally-derived indicator used to identify the last non-missing value prior to RFXSTDTC. The value should be "Y" or null. Perm
MOBLFL Baseline Flag Char Record Qualifier Indicator used to identify a baseline value. The value should be "Y" or "null". Note that MOBLFL is retained for backward compatibility. The authoritative baseline flag for statistical analysis is in an ADaM dataset. Exp
MODRVFL Derived Flag Char Record Qualifier Used to indicate a derived record. The value should be "Y" or null. Records that represent the average of other records, or that do not come from the CRF, or are not as originally collected or received are examples of records that would be derived for the submission datasets. If MODRVFL = "Y", then MOORRES could be null, and (if numeric) MOSTRESN have the derived value. Perm
MOEVAL Evaluator Char Record Qualifier Role of the person who provided the evaluation. Used only for results that are subjective (e.g., assigned by a person or a group). Should be null for records that contain collected or derived data. Examples: "INVESTIGATOR", "ADJUDICATION COMMITTEE", "VENDOR". Perm
VISITNUM Visit Number Num Timing Clinical encounter number. Numeric version of VISIT, used for sorting. Exp
VISIT Visit Name Char Timing Protocol-defined description of clinical encounter. May be used in addition to VISITNUM and/or VISITDY. Perm
VISITDY Planned Study Day of Visit Num Timing Planned study day of the visit based upon RFSTDTC in Demographics. Perm
TAETORD Planned Order of Element within Arm Num Timing Number that gives the planned order of the Element within the Arm for the Element in which the assessment was made. Perm
EPOCH Epoch Char Timing Epoch associated with the date/time at which the observation was made. Perm
MODTC Date/Time of Test Char Timing Date of test. Exp
MODY Study Day of Test Num Timing Study day of the procedure or test, measured as integer days. Algorithm for calculations must be relative to the sponsor-defined RFSTDTC variable in Demographics. Perm
MOTPT Planned Time Point Name Char Timing Text Description of time when measurement should be taken. This may be represented as an elapsed time relative to a fixed reference point, such as time of last dose. See MOTPTNUM and MOTPTREF. Examples: "Start", "5 min post". Perm
MOTPTNUM Planned Time Point Number Num Timing Numerical version of MOTPT to aid in sorting. Perm
MOELTM Planned Elapsed Time from Time Point Ref Char Timing Planned elapsed time (in ISO 8601) relative to a fixed time point reference (MOTPTREF). Not a clock time or a date time variable. Represented as an ISO 8601 duration. Examples: "-PT15M" to represent the period of 15 minutes prior to the reference point indicated by MOTPTREF, or "PT8H" to represent the period of 8 hours after the reference point indicated by MOTPTREF. Perm
MOTPTREF Time Point Reference Char Timing Name of the fixed reference point referred to by MOELTM, MOTPTNUM, and MOTPT. Examples: "PREVIOUS DOSE", "PREVIOUS MEAL". Perm
MORFTDTC Date/Time of Reference Time Point Char Timing Date/time of the reference time point, MOTPTREF. Perm