Sequence the draw, then decide what to say

Two decisions are in front of you now. First, given a full order for this same patient, put the tubes in the correct additive sequence from the mental model. Second, decide what you say and document once you notice the citrate tube is short filled and the discard step was skipped.

Sequencing is not memorization of a list; it is reasoning about which additive could contaminate which downstream specimen. If you can explain why serum follows citrate and why blood culture comes first, you can sequence a tube you have never seen before by asking what its additive could do to the next tube.

The communication decision uses closed-loop communication: state the specimen, the defect or missing fact, the test impact, and the requested next action, then document the response under local procedure. Silence, guessing, or quietly proceeding as if the collection were complete are not closed-loop communication and leave no record that anyone can review later.

An incomplete order, a missed time point, a patient refusal, or an interrupted collection are all documentation and communication events. None of them should be silently converted into a result with an assumed time, an assumed volume, or an assumed completion, because that assumption becomes invisible to everyone downstream who relies on the result.

When a collection does not go as planned, the correct next step is almost always to say so clearly and in writing, not to quietly finish the workflow.