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# cervicalMucusQuality

A category sample type that records the quality of the user’s cervical mucus.

```
static let cervicalMucusQuality: HKCategoryTypeIdentifier
```

## Discussion

These samples use values from the [`HKCategoryValueCervicalMucusQuality`](/documentation/HealthKit/HKCategoryValueCervicalMucusQuality) enum.

## See Also

[`HKCategoryValue`](/documentation/HealthKit/HKCategoryValue)

Categories that are undefined.

[`HKCategoryTypeIdentifier`](/documentation/HealthKit/HKCategoryTypeIdentifier)

Identifiers for creating category types.

[`HKCategoryType`](/documentation/HealthKit/HKCategoryType)

A type that identifies samples that contain a value from a small set of possible values.

[`HKCategorySample`](/documentation/HealthKit/HKCategorySample)

A sample with values from a short list of possible values.


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