Using Infrared Spectroscopy to Analyze Volatile Organic Compounds in the Breath of Patients to Detect Breast Cancer

Inclusion Criteria

Inclusion Criteria: * Female (sex as assigned at birth); * Aged 40 - 74 years; * Mammography confirmed breast tissue density (BI-RADS density score of A, B, C or D); * Scheduled for standard of care biopsy or MRI; * Fluent in language of consent (English, Spanish, or French); * Ability to give informed consent; * Able to provide a breath sample. Exclusion Criteria: * Prior history of breast cancer; * Previous surgical biopsy or surgical excision of breast cancer in the past six months; * History of cancer (except basal cell or squamous cell carcinoma of the skin) in the past year; * Acute respiratory infection and/or symptoms in the past seven days; * MRI BI-RADS 3 undergoing active surveillance (MRI requiring six-month follow-up). * Pregnant or become pregnant during the study.