Clinical can refer to:
- Clinical (or bedside) medical practice, based on observation and treatment of patients as opposed to theory or basic science
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- Clinic
- Illness, a state of poor health
- Clinical chemistry, the analysis of bodily fluids
- Clinical conditions, diagnosed from clinical examination alone
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- Clinical death
- Clinical waste, segregated for safety or security
- Clinical examination; see Physical examination
- Clinical linguistics, linguistics applied to speech therapy
- Clinical medical professions
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- Clinical psychology
- Clinical investigator, a medical researcher in charge of carrying out a clinical trial's protocol
- Clinical social work
- Clinical research
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- Clinical formulation, used to communicate a hypothesis; commonly in clinical psychology
- Clinical governance, a hierarchy of patient care within a health system
- Clinical series, a case series in which patients receive treatment in a clinic or other medical facility
- Clinical site, a facility qualified to perform clinical research
- Clinical trial, a formal research protocol involving patients
- Clinical significance, a conclusion about the effect of a treatment on a patient