---
title: "sample(type:predicate:)"
framework: healthkit
role: symbol
role_heading: Type Method
path: "healthkit/hksamplepredicate/sample(type:predicate:)"
---

# sample(type:predicate:)

Returns a sample predicate that matches samples.

## Declaration

```swift
static func sample(type sampleType: HKSampleType, predicate: NSPredicate? = nil) -> HKSamplePredicate<HKSample>
```

## Parameters

- `sampleType`: A type that matches samples.
- `predicate`: An optional predicate that further restricts the results that the query returns.

## Discussion

Discussion Use this method to create an HKSamplePredicate instance that you can use to query for a heterogenous set of sample types. let stepType = HKQuantityType(.stepCount) // Normally, you'd create a quantity predicate for step counts. let stepPredicate = HKSamplePredicate.sample(type: stepType)

let highHeartRateType = HKCategoryType(.highHeartRateEvent) // Normally, you'd create a category predicate for high heart rate events. let highHeartRatePredicate = HKSamplePredicate.sample(type: highHeartRateType)

// By using sample predicates, you can query for different sample types. let descriptor = HKSampleQueryDescriptor(     predicates: [stepPredicate, highHeartRatePredicate],     sortDescriptors: [],     limit: 10)

// However, the results are an array of HKSample objects. // You'll need to downcast them to access the data. let results = try await descriptor.result(for: store)

## See Also

### Creating Sample Predicates

- [audiogram(_:)](healthkit/hksamplepredicate/audiogram(_:).md)
- [categorySample(type:predicate:)](healthkit/hksamplepredicate/categorysample(type:predicate:).md)
- [clinicalRecord(type:predicate:)](healthkit/hksamplepredicate/clinicalrecord(type:predicate:).md)
- [correlation(type:predicate:)](healthkit/hksamplepredicate/correlation(type:predicate:).md)
- [electrocardiogram(_:)](healthkit/hksamplepredicate/electrocardiogram(_:).md)
- [heartbeatSeries(_:)](healthkit/hksamplepredicate/heartbeatseries(_:).md)
- [quantitySample(type:predicate:)](healthkit/hksamplepredicate/quantitysample(type:predicate:).md)
- [visionPrescription(_:)](healthkit/hksamplepredicate/visionprescription(_:).md)
- [workout(_:)](healthkit/hksamplepredicate/workout(_:).md)
- [workoutRoute(_:)](healthkit/hksamplepredicate/workoutroute(_:).md)