| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Theophylline measurement, blood | Is a | Theophylline measurement | true | Inferred relationship | Existential restriction modifier |  |  | 
| Theophylline measurement, blood | Has intent | Diagnostic intent | false | Inferred relationship | Existential restriction modifier |  |  | 
| Theophylline measurement, blood | Has measured component | Product containing theophylline | false | Inferred relationship | Existential restriction modifier |  |  | 
| Theophylline measurement, blood | Method | Investigation - action | false | Inferred relationship | Existential restriction modifier |  |  | 
| Theophylline measurement, blood | Component | Substance | false | Inferred relationship | Existential restriction modifier |  |  | 
| Theophylline measurement, blood | Component | Product containing theophylline | false | Inferred relationship | Existential restriction modifier |  |  | 
| Theophylline measurement, blood | Component | Theophylline | true | Inferred relationship | Existential restriction modifier | 2 |  | 
| Theophylline measurement, blood | Method | Evaluation - action | false | Inferred relationship | Existential restriction modifier |  |  | 
| Theophylline measurement, blood | Method | Measurement - action | true | Inferred relationship | Existential restriction modifier | 3 |  | 
| Theophylline measurement, blood | Is a | Measurement of level of drug in blood | false | Inferred relationship | Existential restriction modifier |  |  | 
| Theophylline measurement, blood | Has specimen | Blood specimen | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Theophylline measurement, blood | Is a | Measurement of level of substance in blood | true | Inferred relationship | Existential restriction modifier |  |  |