Status: current, Not sufficiently defined by necessary conditions definition status. Date: 17-Mar 2021. Module: SNOMED CT United Kingdom Edition module
Descriptions:
| Id | Description | Lang | Type | Status | Case? | Module | 
| 2590791000000113 | Free thyroxine level (observable entity) | en | Fully specified name | Active | Only initial character case insensitive | SNOMED CT United Kingdom Edition module | 
| 2598611000000113 | Free thyroxine level | en | Synonym | Active | Only initial character case insensitive | SNOMED CT United Kingdom Edition module | 
| 2598621000000119 | FT4 - Free thyroxine level | en | Synonym | Active | Entire term case sensitive | SNOMED CT United Kingdom Edition module | 
| 2599521000000112 | Free T4 level | en | Synonym | Active | Only initial character case insensitive | SNOMED CT United Kingdom Edition module | 
| 2599701000000111 | Free T4 | en | Synonym | Active | Only initial character case insensitive | SNOMED CT United Kingdom Edition module | 
| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Free thyroxine level | Is a | Thyroid hormone tests | true | Inferred relationship | Existential restriction modifier | 
| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Serum free T4 level | Is a | True | Free thyroxine level | Inferred relationship | Existential restriction modifier | |
| Plasma free T4 level | Is a | True | Free thyroxine level | Inferred relationship | Existential restriction modifier | 
This concept is not in any reference sets