Print Departments and specialties Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery. Departments that treat this condition Hematology By Mayo Clinic Staff Request an Appointment at Mayo Clinic Diagnosis & treatment Feb. 08, 2017 Print Share on: FacebookTwitter Related Bone marrow biopsy Complete blood count (CBC) Genetic testing Products & Services Newsletter: Mayo Clinic Health Letter Polycythemia veraSymptoms & causesDiagnosis & treatmentDoctors & departments Research: It's All About Patients CON-20257394 Patient Care & Health Information Diseases & Conditions Polycythemia vera