Purpose and boundary
This guide covers the administrative movement of pathology slides, paraffin blocks and reports for cross-border coordination: borrowing, packaging, courier booking, contents lists, chain of custody and return. It does not explain a pathology result, recommend a test, or replace the source laboratory’s written requirements.
ChinaCareAccess can help assemble a neutral request and keep logistics answers together. The record-holding laboratory controls release, the receiving institution controls acceptance, and the carrier and authorities control transport requirements. A coordinator cannot authorise a loan or promise that a consignment will be accepted.
Confirm release and acceptance
Ask the laboratory that holds the material whether each slide, block or report may leave its custody, for how long, under which borrower name, and with what permission or form. Request its required identifiers, packaging method, temperature or handling note, contact person and deadline; keep the original instruction unchanged.
Ask the receiving institution to confirm its exact delivery address, department, named recipient, opening hours, booking or case reference, accepted formats and return requirements. Written acceptance is a logistics checkpoint only. It is not a promise about review, diagnosis, treatment, timing or clinical usefulness.
Build the inventory
Create one line per item or sealed group, using the identifiers supplied by the laboratory rather than inventing a new clinical label. Record slide or block count, report count, source date, condition if the laboratory allows it, container or seal number, sender, receiver and intended return status.
Keep a copy of the contents list outside the package and another with the authorised records. Do not put unnecessary names, passport numbers or a full medical history on a courier label. If an identifier is unclear, stop and ask the record holder; never guess or silently alter a specimen label.
Pack and book the courier
Packaging depends on the material, fixation, route and carrier classification. WHO guidance describes classification, packaging, marking, labelling and documentation for infectious substances, while IATA explains that state and operator variations can apply. The responsible laboratory or trained shipper must decide which rule applies to this consignment.
Use a carrier that accepts the declared material and obtain a tracking number, waybill and any required declaration before collection. Confirm whether customs paperwork, import permission, temperature control, insurance or a return label is required. Never describe a package inaccurately to avoid a restriction, and do not send material before the receiver confirms acceptance.
Record every handoff
Start a chain-of-custody log with the packed date and time, item count, package condition, seal or container number, tracking number, sender, courier collector and receiving contact. At each transfer, record the date, time zone, location, person or organisation, package condition and any discrepancy reported.
A tracking page is useful evidence but is not the entire custody record. Save booking confirmation, waybill, customs message, delivery proof and written exception notices together. If a parcel is delayed, opened, damaged or incomplete, preserve the facts and notify the laboratory and receiver through their official contacts before arranging a replacement.
Receive, lend and return
The receiving institution should acknowledge what arrived, when it arrived, the package condition and any missing or extra line. Ask it to state where the materials are held, who owns the next administrative action and when the review or handling step is complete, without asking for a clinical interpretation in the logistics log.
Before dispatch, agree the return trigger, permitted return window, packaging responsibility, carrier route and final recipient. At return, reconcile the original inventory with the returned count and condition, record the tracking and delivery proof, and ask the source laboratory to close the loan. ChinaCareAccess can help request this minimum logistics checklist.



