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We can tell Stefan to use --CONC and --CONCU for exposure agent concentration and unit, and add them to the IS domain as NSVs, because IG3.2 and SDTM 2.0 still limit these variables to the MS domain only. Meanwhile, we work on getting these variables officially added to the other domains for IG4.0 or a later version of the IG (IS, CP, maybe GF too).
Or we tell Stefan to pre-coordinate all that information into the Test Condition Agent (ISCNDAGT) variable.
Other thoughts? Other ways forward?

Here is a mock example of Stefan's data using --CONC and --CONCU:

Dataset wrap

Dataset2

Row	STUDYID	DOMAIN	USUBJID	SPDEVID	ISSEQ	ISTESTCD	ISTEST	ISTSTCND	ISCNDAGT	ISCONC	ISCONCU	ISORRES	ISORRESU	ISSTRESC	ISSTRESN	ISSTRESU	ISSPEC	ISMETHOD	ISDTC
1	ABC	IS	ABC-01-203	ABC001	1	IFNG	Interferon Gamma	WITHOUT STIMULATING AGENT				2.17	IU/mL	2.17	2.17	IU/mL	SERUM	ELISA/Other Method	2013-08-26
2	ABC	IS	ABC-01-203	ABC001	2	IFNG	Interferon Gamma	WITH STIMULATING AGENT	Study Drug	20	mg	6.2	IU/mL	6.2	6.2	IU/mL	SERUM	ELISA/Other Method	2013-08-26
3	ABC	IS	ABC-01-203	ABC001	3	IFNG	Interferon Gamma	WITH STIMULATING AGENT	Study Drug	40	mg	15.8	IU/mL	15.8	15.8	IU/mL	SERUM	ELISA/Other Method	2013-08-26
4	ABC	IS	ABC-01-203	ABC001	4	IFNG	Interferon Gamma	WITH STIMULATING AGENT	Other Test Agent	5	mg	3.33	IU/mL	3.33	3.33	IU/mL	SERUM	ELISA/Other Method	2013-08-26
5	ABC	IS	ABC-01-203	ABC001	5	IFNG	Interferon Gamma	WITH STIMULATING AGENT	Other Test Agent	15	mg	7.22	IU/mL	7.22	7.22	IU/mL	SERUM	ELISA/Other Method	2013-08-26

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