---
title: upperBound
framework: healthkit
role: symbol
role_heading: Instance Property
path: healthkit/hkaudiogramsensitivitypointclampingrange/upperbound
---

# upperBound

## Declaration

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

## Discussion

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