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getBloodType.md

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getBloodType

Get the blood type. If the BloodType read permission is missing or the user has denied it then the value will be unknown. The possible values are:

Value HKBiologicalSex
unknown HKBloodTypeNotSet
A+ HKBloodTypeAPositive
A- HKBloodTypeANegative
B+ HKBloodTypeBPositive
B- HKBloodTypeBNegative
AB+ HKBloodTypeABPositive
AB- HKBloodTypeABNegative
O+ HKBloodTypeOPositive
O+ HKBloodTypeONegative 
AppleHealthKit.getBloodType(null, (err: Object, results: Object) => {
  if (err) {
    return
  }
  console.log(results)
})

Example output:

{
  "value": "A-"
}