Whether a laboratory adopts them because they have to (mandatory accreditation or regulation) or because they see opportunity and advantage (voluntary adoption or voluntary accreditation) depends on the situation and circumstance.
Some laboratories do both.
Many organizations in manufacturing and service sectors have demonstrated the tangible advantages to implementing Quality practices.
Laboratory Management should then ensure that laboratory decisions are consistent with those policies.
When there are documents that are written as different versions, people working in the laboratory should be able to know which is the most current and active version.
When documents are stored, they should be stored safely and in an appropriate way so that they can be retrieved when needed.