---
title: sample
framework: healthkit
role: symbol
role_heading: Instance Property
path: healthkit/hkquantityseriessamplequerydescriptor/result/sample
---

# sample

The quantity sample that owns the series of data entries.

## Declaration

```swift
let sample: HKQuantitySample?
```

## Discussion

Discussion HealthKit sets this value to nil unless you included the includeSample option when you created the series query descriptor.

## See Also

### Accessing Sample Data

- [quantity](healthkit/hkquantityseriessamplequerydescriptor/result/quantity.md)
- [dateInterval](healthkit/hkquantityseriessamplequerydescriptor/result/dateinterval.md)