> ## Documentation Index
> Fetch the complete documentation index at: https://docs.metriport.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Range

> Base StructureDefinition for Range Type: A set of ordered Quantities defined by a low and high limit.

## Properties

| Name      | Required | Type                                                   | Description                                   |
| --------- | -------- | ------------------------------------------------------ | --------------------------------------------- |
| id        | No       | string                                                 | Unique id for inter-element referencing       |
| extension | No       | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations |
| low       | No       | [Quantity](/medical-api/fhir/data-types/quantity)      | Low limit                                     |
| high      | No       | [Quantity](/medical-api/fhir/data-types/quantity)      | High limit                                    |