Definitions for "Chain of Custody"
The process by which the source of a timber product is verified. This entails ‘tracking' the timber from the forest through all the steps of the production process until it reaches the end user. The process is usually necessary before a timber product can be labelled as being produced from a sustainable source.
A document designed to trace the custody of a sample(s) from the point of origin to final disposition with the intent of legally proving that custody remained intact and that tampering or substitution were precluded.
The set of procedures to account for the integrity of each urine or blood specimen by tracking its handling and storage from point of specimen collection to final disposition of the specimen. In drug testing, this requires the use of the appropriate drug testing custody form, from the time of collection to receipt by the laboratory.
Keywords:  bullet, trail, proof, paper
a bullet proof paper trail
form or set of forms that document the collection and transfer of an ingredient or product.