Diagnostic Services Market, By Service Type (Pathology/Laboratory (Clinical Chemistry, Hematology, Microbiology and Cytology, Molecular Diagnostics, Immunodiagnostics/Immunoassay, Others (Histopathology)), and Radiology/Diagnostic Imaging (X-ray, Magnetic Resonance Imaging (MRI), Ultrasound, Computed Tomography (CT) Scan, Nuclear Imaging (PET, SPECT), Others (Mammography)), By Test Type (Routine/Preventive Test, Molecular and Genetic Test, Point-of-Care Tests (POCT), and Other Specialty Test), By Application (Oncology, Cardiology, Neurology, Gastroenterology, Orthopedics, Gynecology and Obstetrics, and Other Applications (e.g., Infectious Diseases, Endocrinology)), By End User (Hospitals and Clinics, Diagnostic Laboratories and Pathology Labs, Research and Academic Institutes, Home Healthcare/At-Home Testing, and Specialized Diagnostic Centers), By Payer (Public, Private, Self-Pay (Out-of-Pocket Patients) and Corporate/Employer-Sponsored Health Plans), By Geography (North America, Europe, Asia Pacific, Latin America, Middle East, and Africa)