A quantity sample type that measures the user’s peripheral perfusion index.
SDKs
Framework
static let peripheralPerfusionIndex: HKQuantityThe peripheral perfusion index measures the pulse strength at the monitoring site. These samples use percent units (described in HKUnit) and measure discrete values (described in HKStatistics).
static let bloodA quantity sample type that measures the user’s blood alcohol content.
static let bloodA quantity sample type that measures the user’s blood glucose level.
static let electrodermalA quantity sample type that measures electrodermal activity.
static let forcedA quantity sample type that measures the amount of air that can be forcibly exhaled from the lungs during the first second of a forced exhalation.
static let forcedA quantity sample type that measures the amount of air that can be forcibly exhaled from the lungs after taking the deepest breath possible.
static let inhalerA quantity sample type that measures the number of puffs the user takes from their inhaler.
static let insulinA quantity sample that measures the amount of insulin delivered.
static let numberA quantity sample type that measures the number of times the user has fallen.
static let peakA quantity sample type that measures the user’s maximum flow rate generated during a forceful exhalation.