| Abbreviation | Definition |
|---|---|
| CLEVER | Clinical Laboratory for Evaluation and Validation of Epidemiologic Research |
| CLH | Clinical Laboratories of Hawaii |
| CLIA | A Complex Laboratory Institutional Accreditation |
| CLIA | ChemiLuminescent ImmunoAssay |
| CLIA | Clandestine Laboratory Investigators Association |
| CLIA | Clandestine Laboratory Investigators Association's |
| CLIA | Clinical Laboratory Improvement Act |
| CLIA | Clinical Laboratory Improvement Amendm |
| CLIA | Clinical Laboratory Improvement Amendments |
| CLIA | Clinical Laboratory Improvement Amendments of 1998 |
| CLIA | Clinical Laboratory Improvements Amendments |
| CLIR | Collaborative Laboratory Integrated Reports |
| CLIS | Clinical Laboratory Improvement Service |
| CLIS | Clinical Laboratory Improvement Services |
| CLMC | Central Laboratory of Mineralogy and Crystallography |
| CLMR | Clinical Laboratory Management Review |
| CLN | Clinical Laboratory News |
| CLO | Campylobacter Like Organism |
| CLO | Chaphlobacter Like Organism |
| CLO | Cornell Laboratory of Ornithology |