Harmonization and standardization of laboratory tests and procedures carry a variety of benefits. For example, within a laboratory network, harmonization/standardization provides a common platform for test procedures and documentation across different laboratories. This enables staff to be deployed across several laboratories, if required, without additional training, since test procedures and documentation are the "same" in the different laboratories. Streamlined accreditation of laboratories is also facilitated, as accreditation in one laboratory using a particular procedure/documentation should simplify the accreditation of another laboratory in that network to the same accreditation standard. In the current chapter, we detail our experience regarding the harmonization and standardization of laboratory tests and procedures related to hemostasis testing in our laboratory network, NSW Health Pathology, representing the largest public pathology provider in Australia, with over 60 separate laboratories.