## findObservationReferenceRange() function

Tries to find an observation reference range for the given patient and condition names.

**Signature:**

```typescript
export declare function findObservationReferenceRange(definition: ObservationDefinition, patient: Patient, names?: string[]): ObservationDefinitionQualifiedInterval | undefined;
```

## Parameters

| Parameter | Type | Description |
| --- | --- | --- |
| definition | ObservationDefinition | The observation definition. |
| patient | Patient | The patient. |
| names | string\[\] | _(Optional)_ Optional condition names. |

**Returns:**

ObservationDefinitionQualifiedInterval | undefined

The observation interval if found; otherwise undefined.