AccessMedicine This link opens in a new windowThe "Quick Reference" tab in AccessMedicine leads to many quick tools for use at the point-of-care. The "Diagnostic Tests" item leads to content from the Pocket Guide to Diagnostic Tests, 6th Edition. The "DDx" item links to Diagnosaurus, which is a database of over 1,000 differential diagnoses. Diagnosaurus is searchable by symptom, disease, or organ system.