The short version
- Timing and temperature protect the measurement.
- Labels link the sample to the right record without exposing names casually.
- If something goes wrong in transit, teams follow a written plan.
Cold chain
Some assays need ice packs or frozen shipping. The protocol names the range.
Timing windows
A draw that misses its window may need to be repeated or skipped for that visit.
Chain of custody
Logs track who handled a sample so problems can be traced.
For participants
If a visit runs late, ask whether the sample can still be collected per protocol.
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