The shippedAt timestamp on a ChainOfCustody is an important part of the custody trail — it documents when responsibility for the samples passed from the sampling team to the carrier. Combined with collectionDate and the lab's receivedAt, it allows you to account for all elapsed time during transit, which matters when holding times are tight. Record this at the moment of handoff, not when the courier picked up at your office end of day.
Technical section
Data model, API, and internals — visible to developers.