# sample(type:predicate:) Returns a sample predicate that matches samples. ``` static func sample(type sampleType: HKSampleType, predicate: NSPredicate? = nil) -> HKSamplePredicate ``` ## Parameters `sampleType` A type that matches samples. `predicate` An optional predicate that further restricts the results that the query returns. ## Discussion Use this method to create an [`HKSamplePredicate`](/documentation/HealthKit/HKSamplePredicate) instance that you can use to query for a heterogenous set of sample types. ```swift 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) ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)