| Term | Definition |
| classification system for four blood groups | ABO |
| calcium | Ca |
| cerebrospinal fluid | CSF |
| differential | Diff |
| gonorrhea or gonococcus | GC |
| hepatitis A virus | HAV |
| hepatitis B virus | HBV |
| high-density lipoprotein | HDL |
| potassium | K |
| sodium chloride | NaCl |
| platelets | plts |
| prothrombin time | PT |
| parathyroid hormone | PTH |
| partial thromboplastin time | PTT |
| red cell volume | RCV |
| serum separator tube | SST |
| serological test for syphilis | STS |
| type and cross match | T&C |
| total blood volume | TBV |
| Venereal Disease Research Laboratory | VDRL |
| white blood (cell) count | WBC |