Chandler Loop System ®
ISO 109whats-it ??
There are different ways, to have a look at the original document. But the publishing is restricted (otherwise you would be able to download it here)
You can buy a copy (for example here: https://www.iso.org/standard/63448.htm) of the final version, released in April 2017, or examine a preview (https://www.iso.org/obp/ui/#iso:std:iso:10993:-4:ed-3:v1:en).
Public spaces such as university libraries permit free access.
What it is:
It is a guideline for all essential aspects, to check the effect of exogenous material with human blood for regulatory purposes. Including terms and definitions.
A real good summary again here >>> https://www.iso.org/standard/63448.html
What it is not:
A ready to use concept for state-of-the-art testing. It doesn't work without own brainpower.