| Term | Definition |
| AAAHP | American Association of Allied Health Professionals |
| ABG | arterial blood gas |
| ACA | American Certification Agency for Healthcare Professionals |
| ACE | angiostesin converting enzyme |
| ACTH | adrenocorticotropic hormone |
| ADH | antidiuretic hormone |
| AIDS | acquired immdoefiency syndrome |
| ALP | alkaline phosphatase |
| ALS | amiotrophic lateral sclerosis |
| ALT | alamine aminotransferase |
| AMT | American Medical Technologists |
| ANA | antinuclear antibody |
| APTT | activated partial thromboplastine time |
| ASCLS | American Society for Clinical Laboratory Science |
| ASCP | American Society for Clinical Pathologist |
| ASPT | American Society of Phlebotomy Technicians |
| AST | aspartate aminotransferase |
| BBP | blood-born pathogen |
| BUN | blood urea nitrogen |
| C & S | culture and sensitivity |
| CAP | College of American Pathologists |
| CBC | complete blood count |
| CCU | cardiac care unit |
| CDC | Center for Disease Control & Prevention |
| CEU | continuing education unit |
| CK | creatine kinase |
| CLIA'88 | Clinical Lab Improvement Act of 1988 |
| CLS | clinical laboratory scientist |
| CLSI | Clinical Laboratory Scientist Institute |
| CLT | Clinical Laboratory Technician |
| CNA | certified nursing assistant |
| CNS | central nervous system |
| CPR | cardiopulmonary resuscitation |
| CPT | certified phlebotomy technician |
| CT | computed tomography |
| diff | differential |
| DOT | department of transportation |
| EIA | enzyme immunoassay |
| EP | expanded precautions |
| ER | emergency room |
| ESR | erythrocyte sedimentation rate |
| FBS | fasting blood sugar |
| FDA | Food and Drug Administration |
| GGT | y-glutamytransferase |
| GTT | glucose tolerance test |
| HCT | hematocrit |
| HDL | high-density lipoprotein |
| HEPA | high efficiency particulate air filtration |
| Hgb | hemoglobin |
| HIV | human immunodeficiency virus |
| HMO | heath maintenance organization |
| HTLV | Human T-Cell lymphotropic virus |
| ICU | intensive care unit |
| INR | internaional normalized ratio |
| JCAHO | Joint Commission on Accreditation of Healthcare Organizations |
| LD | lactate dehydrogenase |
| LDL | low-density lipoprotein |
| LIS | laboratory information services |
| LPN | licensed practical nurse |
| MCH | mean corpuscular hemoglobin |
| MCHC | mean corpuscular hemoglobin concentration |
| MCV | mean corpuscular volume |
| MIS | manager of information services |
| MLT | medical laboratory technician |
| MRI | magnetic resonance imaging |
| MRSA | methicillin-resistant Staphylococcus aureus |
| MSDS | materials safety data sheet |
| MT | medical technician |
| NAACLS | National Accrediting Agency for Clinical Laboratory Science |
| NCA | National Credentialing Agency |
| NCCLS | National Committee for Clinical Laboratory Standards |
| NFPA | National Fire Protection Association |
| NHA | National Healthcareer Association |
| NIOSH | National Institute for Occupational Safety & Health |
| NPA | National Phlebotomy Association |
| OR | operating room |
| OSHA | Occupational Safety and Health Administration |
| PBT | phlebotomy technician |
| PCA | patient care assistant |
| PCT | patient care technician |
| PET | positron emission tomography |
| POL | physician office lab |
| PPE | personal protective equipment |
| PPO | preferred provider organization |
| PT | prothrombin time |
| RDW | red cell distribution width |
| RIA | radioimmunoassay |
| RN | registered nurse |
| RPT | registered phlebotomy technician |
| SST | serum separator tube |
| TBP | transmission-base precaution |
| VRE | vancomicyn-reisistant Enterococcus |
| WBC | white blood cell (or count) |
| SPS | sodium polyanetholesulfonate |
| PST | plasma separator tube |
| HLA | human leukocyte antigen |
| EDTA | ethyllenediaminetetraacetic acid |