Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core
Descriptions:
| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values |
| HLA class I antigen | Is a | HLA antigen | true | Inferred relationship | Some |
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group |
| Human leucocyte antigen class I type antigen A1 - B57 | Is a | True | HLA class I antigen | Inferred relationship | Some | |
| Human leucocyte antigen class I type antigen B59 - Cw10 | Is a | True | HLA class I antigen | Inferred relationship | Some | |
| HLA-A antigen | Is a | True | HLA class I antigen | Inferred relationship | Some | |
| HLA typing, single antigens, A, B, or C | Has measured component | False | HLA class I antigen | Inferred relationship | Some | |
| HLA typing, multiple antigens, A, B, or C | Has measured component | False | HLA class I antigen | Inferred relationship | Some | |
| HLA class I serotyping | Has measured component | False | HLA class I antigen | Inferred relationship | Some | |
| HLA typing, single antigens, A, B, or C | Component | True | HLA class I antigen | Inferred relationship | Some | 1 |
| HLA typing, multiple antigens, A, B, or C | Component | True | HLA class I antigen | Inferred relationship | Some | 1 |
| HLA class I serotyping | Component | True | HLA class I antigen | Inferred relationship | Some | 1 |
This concept is not in any reference sets