---
title: internationalUnit()
framework: healthkit
role: symbol
role_heading: Type Method
path: healthkit/hkunit/internationalunit()
---

# internationalUnit()

Returns a HealthKit unit that measures the amount of a biologically active substance in international units (IU).

## Declaration

```swift
class func internationalUnit() -> Self
```

## Return Value

Return Value A HealthKit unit for measuring amounts in IUs.