| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Route of administration | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Conjugated | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Unconjugated | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Total (all fractions of) | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Degree of saturation of | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Saturated | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Unsaturated | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| General information qualifier | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Qualifier for type of diagnosis | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Qualifier for certainty of diagnosis | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Special information qualifier | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Adjectival modifier | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Modifier related to basic sciences | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Modifier related to clinical specialty AND/OR occupation | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Modifier mainly for procedure | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| General clinical stage for disease AND/OR neoplasm | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Modifiers of Analytes and Substances | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Classification system | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Blood product unit attribute | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Property | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Anatomical reference point of right atrium | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Pathologic | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Time frame | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Risk factor | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Seronegative | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| False positive | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  | 
| Approved | Is a | False | Modifier, linkage term AND/OR qualifier | Inferred relationship | Existential restriction modifier |  |