---
title: lowerBound
framework: healthkit
role: symbol
role_heading: Instance Property
path: healthkit/hkaudiogramsensitivitypointclampingrange/lowerbound
---

# lowerBound

## Declaration

```swift
@NSCopying var lowerBound: HKQuantity? { get }
```

## Discussion

Discussion The lower bound of the clamping range, if any, in dBHL.