HealthKit: Add category for INR (prothrombin time) measurements

Originator:rsfinn
Number:rdar://28192870 Date Originated:07-Sep-2016
Status:Open Resolved:
Product:iOS SDK Product Version:iOS 10
Classification:Enhancement Reproducible:Always
 
HealthKit should include a HKQuantityTypeIdentifier constant representing INR (international normalized ratio) as a measure of prothrombin time or coagulation (see <https://en.wikipedia.org/wiki/Prothrombin_time#International_normalized_ratio>).  This would be immensely valuable for people who are taking warfarin (Coumadin) to reduce the possibility of blood clots and who are measuring their own INR at home.

The suggested constant name is "internationalNormalizedRatio".  The corresponding value should be type Double; the value is unitless.  Typical ranges are 0.8-1.2 for untreated individuals and 1.9-3.1 for individuals taking warfarin.

Steps to Reproduce:
Search the HealthKit API document for references to INR.

Expected Results:
A HKQuantityTypeIdentifier representing INR values.

Actual Results:
No such HKQuantityTypeIdentifier was found.

Comments


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!