USUBJID

Join LB observations to a subject

The fictional subject key links laboratory observations to a participant. Multiple tests can share this key; the test and timing context are still needed to interpret each result.

Domain context: LB
Example JSON type: string — authored example only
Example value: SYN-001
Official label / type / role / core: Not bundled. No official values inferred.
Controlled terminology binding: Not bundled. No verified binding asserted.
Authorship and review: Original ClinDevLab lesson · 2026-10-08

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Original ClinDevLab explanations. Publisher material is linked, not reproduced. Reviewed 8 October 2026.

SDTM 2.0https://www.cdisc.org/standards/foundational/sdtm/sdtm-v2-0 · CDISC · 2.0 · accessed 2026-10-08
SDTMIG 3.4https://www.cdisc.org/standards/foundational/sdtmig/sdtmig-v3-4 · CDISC · 3.4 · accessed 2026-10-08

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