| Abbreviation | Definition |
|---|---|
| MAML | Mobile Archaeological Microforensic Laboratory |
| MAO | Mono Amine Oxidase |
| MAP | Master Amino Acid Pattern |
| MAPL | Mid America Pathology Laboratory |
| MAR | Mixed Agglutination Reaction |
| MAR | Multiple Antibiotic Resistance |
| MARL | Materials Analysis and Research Laboratory |
| MARL | Music and Audio Research Laboratory |
| MASH | Molecular Assessment of Sensitivity to Herceptin |
| MATi | Metrohm Automated Titration |
| MAU | MicroAlbumin Urine lab test |
| MBC | Minimum Bactericidal Concentration |
| MBDL | Model Based Design Laboratory |
| MBFL | medical bio field laboratory |
| MBI | Massachusetts Biomedical Initiatives |
| MBIL | Musculoskeletal Biomechanics and Imaging Laboratory |
| MBL | Marine Biological Laboratory |
| MBL | Microcomputer Based Laboratory |
| MBL | Molecular Biology Laboratory |
| MBNL | Motor Behavior and Neurorehabilitation Laboratory |