---
title: HKBiologicalSex.notSet
framework: healthkit
role: symbol
role_heading: Case
path: healthkit/hkbiologicalsex/notset
---

# HKBiologicalSex.notSet

A constant indicating that either the user’s biological sex characteristic type is not set, or the user has not granted your app permission to read that characteristic type.

## Declaration

```swift
case notSet
```

## Discussion

Discussion For more information on permissions, see HealthKit.

## See Also

### Constants

- [HKBiologicalSex.female](healthkit/hkbiologicalsex/female.md)
- [HKBiologicalSex.male](healthkit/hkbiologicalsex/male.md)
- [HKBiologicalSex.other](healthkit/hkbiologicalsex/other.md)