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
LBSEQ Sequence Number Num Identifier Sequence Number given to ensure uniqueness of subject records within a domain. May be any valid number. Req
LBGRPID Group ID Char Identifier Used to tie together a block of related records in a single domain for a subject. Perm
LBREFID Specimen ID Char Identifier Internal or external specimen identifier. Example: Specimen ID. Perm
LBSPID 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 the Lab page. Perm
LBTESTCD Lab Test or Examination Short Name Char Topic Short name of the measurement, test, or examination described in LBTEST. It can be used as a column name when converting a dataset from a vertical to a horizontal format. The value in LBTESTCD cannot be longer than 8 characters, nor can it start with a number (e.g.”1TEST”). LBTESTCD cannot contain characters other than letters, numbers, or underscores. Examples: ALT, LDH. Req
LBTEST Lab Test or Examination Name Char Synonym Qualifier Verbatim name of the test or examination used to obtain the measurement or finding. Note any test normally performed by a clinical laboratory is considered a lab test. The value in LBTEST cannot be longer than 40 characters. Examples: Alanine Aminotransferase, Lactate Dehydrogenase. Req
LBCAT Category for Lab Test Char Grouping Qualifier Used to define a category of related records across subjects. Examples: such as HEMATOLOGY, URINALYSIS, CHEMISTRY. Exp
LBSCAT Subcategory for Lab Test Char Grouping Qualifier A further categorization of a test category such as DIFFERENTIAL, COAGULATON, LIVER FUNCTION, ELECTROLYTES. Perm
LBORRES Result or Finding in Original Units Char Result Qualifier Result of the measurement or finding as originally received or collected. Exp
LBORRESU Original Units Char Variable Qualifier Original units in which the data were collected. The unit for LBORRES. Example: g/L. Exp
LBORNRLO Reference Range Lower Limit in Orig Unit Char Variable Qualifier Lower end of reference range for continuous measurements in original units. Should be populated only for continuous results. Exp
LBORNRHI Reference Range Upper Limit in Orig Unit Char Variable Qualifier Upper end of reference range for continuous measurements in original units. Should be populated only for continuous results. Exp
LBSTRESC Character Result/Finding in Std Format Char Result Qualifier Contains the result value for all findings, copied or derived from LBORRES in a standard format or standard units. LBSTRESC should store all results or findings in character format; if results are numeric, they should also be storedin numeric format in LBSTRESN. For example, if a test has results “NONE”,“NEG”, and “NEGATIVE” in LBORRES and these results effectively have the same meaning, they could be represented in standard format in LBSTRESC as “NEGATIVE”. For other examples, see general assumptions. Exp
LBSTRESN 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 LBSTRESC. LBSTRESN should store all numeric test results or findings. Exp
LBSTRESU Standard Units Char Variable Qualifier Standardized unit used for LBSTRESC or LBSTRESN. Exp
LBSTNRLO Reference Range Lower Limit-Std Units Num Variable Qualifier Lower end of reference range for continuous measurements for LBSTRESC/LBSTRESN in standardized units. Should be populated only for continuous results. Exp
LBSTNRHI Reference Range Upper Limit-Std Units Num Variable Qualifier Upper end of reference range for continuous measurements in standardized units. Should be populated only for continuous results. Exp
LBSTNRC Reference Range for Char Rslt-Std Units Char Variable Qualifier For normal range values that are character in ordinal scale or if categorical ranges were supplied (e.g., “-1 to +1”, “NEGATIVE TO TRACE”). Perm
LBNRIND Reference Range Indicator Char Variable Qualifier 1. Indicates where the value falls with respect to reference range defined by LBORNRLO and LBORNRHI, LBSTNRLO and LBSTNRHI, or by LBSTNRC. Examples: NORMAL, ABNORMAL, HIGH, LOW. 2. Sponsors should specify in the study metadata (Comments column in the define.xml) whether LBNRIND refers to the original or standard reference ranges and results. 3. Should not be used to indicate clinical significance. Exp
LBSTAT Completion Status Char Record Qualifier Used to indicate exam not done. Should be null if a result exists in LBORRES. Perm
LBREASND Reason Test Not Done Char Record Qualifier Describes why a measurement or test was not performed such as BROKEN EQUIPMENT, SUBJECT REFUSED, or SPECIMEN LOST. Used in conjunction with LBSTAT when value is NOT DONE. Perm
LBNAM Vendor Name Char Record Qualifier The name or identifier of the laboratory that performed the test. Perm
LBLOINC LOINC Code Char Synonym Qualifier 1. Dictionary-derived LOINC Code for LBTEST. 2. The sponsor is expected to provide the dictionary name and version used to map the terms utilizing the define.xml external codelist attributes Perm
LBSPEC Specimen Type Char Record Qualifier Defines the type of specimen used for a measurement. Examples: SERUM, PLASMA, URINE. Perm
LBSPCCND Specimen Condition Char Record Qualifier Free or standardized text describing the condition of the specimen e.g. HEMOLYZED, ICTERIC, LIPEMIC etc. Perm
LBMETHOD Method of Test or Examination Char Record Qualifier Method of the test or examination. Examples: EIA (Enzyme Immunoassay), ELECTROPHORESIS, DIPSTICK Perm
LBBLFL Baseline Flag Char Record Qualifier Indicator used to identify a baseline value. The value should be “Y” or null. Exp
LBFAST Fasting Status Char Record Qualifier Indicator used to identify fasting status such as Y, N, U, or null if not relevant. Perm
LBDRVFL 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 do not come from the CRF, or are not as originally received or collected are examples of records that might be derived for the submission datasets. If LBDRVFL=Y, then LBORRES may be null, with LBSTRESC, and (if numeric) LBSTRESN having the derived value. Perm
LBTOX Toxicity Char Variable Qualifier Description of toxicity quantified by LBTOXGR. The sponsor is expected to provide the name of the scale and version used to map the terms, utilizing the define.xml external codelist attributes. Perm
LBTOXGR Standard Toxicity Grade Char Variable Qualifier Records toxicity grade value using a standard toxicity scale (such as the NCI CTCAE). If value is from a numeric scale, represent only the number (e.g., “2” and not “Grade 2”). The sponsor is expected to provide the name of the scale and version used to map the terms, utilizing the define.xml external codelist attributes. Perm
VISITNUM Visit Number Num Timing 1. Clinical encounter number. 2. Numeric version of VISIT, used for sorting. Exp
VISIT Visit Name Char Timing 1. Protocol-defined description of clinical encounter 2. 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
LBDTC Date/Time of Specimen Collection Char Timing Exp
LBENDTC End Date/Time of Specimen Collection Char Timing Perm
LBDY Study Day of Specimen Collection Num Timing 1. Study day of specimen collection, measured as integer days. 2. Algorithm for calculations must be relative to the sponsor-defined RFSTDTC variable in Demographics. This formula should be consistent across the submission. Perm
LBTPT Planned Time Point Name Char Timing 1. Text Description of time when specimen should be taken. 2. This may be represented as an elapsed time relative to a fixed reference point, such as time of last dose. See LBTPTNUM and LBTPTREF. Examples: Start, 5 min post. Perm
LBTPTNUM Planned Time Point Number Num Timing Numerical version of LBTPT to aid in sorting. Perm
LBELTM Planned Elapsed Time from Time Point Ref Char Timing Planned Elapsed time (in ISO 8601) relative to a planned fixed reference (LBTPTREF). This variable is useful where there are repetitive measures. 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 LBTPTREF, or “PT8H” to represent the period of 8 hours after the reference point indicated by LBTPTREF. Perm
LBTPTREF Time Point Reference Char Timing Name of the fixed reference point referred to by LBELTM, LBTPTNUM, and LBTPT. Examples: PREVIOUS DOSE, PREVIOUS MEAL. Perm
LBRFTDTC Date/Time of Reference Time Point Char Timing Date/time of the reference time point, LBTPTREF. Perm