Whitworth Library uses the Library of Congress classification system. Health Science books are located in both the main collection and reference (non-circulating) collection shelved under:
- Q Science
- QD Chemistry
- QH Natural history - Biology
- QM Human anatomy
- QP Physiology
- QR Microbiology
- R Medicine
- RA Public aspects of medicine
- RB Pathology
- RC Internal medicine
- RD Surgery
- FR Otorhinolaryngology
- RG Gynecology and obstetrics
- RJ Pediatrics
- RL Dermatology
- RM Therapeutics. Pharmacology
- RS Pharmacy and materia medica
- RT Nursing