@openstreetmap/id-tagging-schema/data/fields/blood_components.json

The OpenStreetMap tagging model used by the iD editor

{
    "key": "blood:",
    "type": "multiCombo",
    "label": "Blood Components",
    "strings": {
        "options": {
            "whole": "whole blood",
            "plasma": "plasma",
            "platelets": "platelets",
            "stemcells": "stem cell samples"
        }
    }
}