Fitness wearable maker Whoop is launching a new panel focused on women’s health through its Whoop Labs blood testing service, El.kz citesTechCrunch.

The company is also adding a new feature to its app that surfaces information about hormonal changes during menstrual cycles.

The startup said the panel includes 11 blood biomarkers that can give insights into aspects such as cycle regulation and hormonal transitions: Anti-Müllerian Hormone (AMH), Progesterone, Prolactin, and Thyroid Peroxidase Antibodies (TPOAb), Free T4, Free T3, Leptin, Vitamin B12 (Cobalamin), Folate, Magnesium, and Phosphate (as Phosphorus).

The company claims measuring these biomarkers will help users understand more about perimenopause, thyroid function, nutrient sufficiency, and bone metabolic resilience, when paired with data on activity, sleep, and recovery.

Meanwhile, the Whoop apps’ new Hormonal Symptom Insights and Predictions feature creates a model of hormonal changes over menstrual cycles based on previous data. It uses this model to predict possible date windows for the next period, give insights into cycle lengths, period length and irregularities, and detail individual symptom patterns.

The company said it can tie insights from this feature into lab results to sort biomarker results into ‘optimal,’ ‘sufficient,’ or ‘out of range’ categories.