TOPA Diagnostics is a Clinical Research Organization. TOPA Diagnostics has provided pathology and cytology services to the medical community – including physician offices, hospitals, endoscopy facilities, surgery centers and radiology facilities – for over 20 years. Working closely with our clinical colleagues, we understand that clinical correlation is essential to providing you the information you need to effectively treat patients. That is why we value close communication and are always available to discuss pathology findings on your patients.