| Abbreviation | Meaning |
|---|---|
| K | potassium (from Latin kalium) |
| KA | ketoacidosis |
| Kcal | kilocalorie; calorie |
| KCCT | kaolin cephalin clotting time (see Partial thromboplastin time) |
| KELS | Kohlman Evaluation of Living Skills |
| kg | kilogram |
| KIV | keep in view |
| KLS | kidney, liver, spleen |
| Km | Michaelis constant |
| KOH | potassium hydroxide |
| KS | Kaposi's sarcoma; Kartagener syndrome |
| KSHV | Kaposi's sarcoma-associated herpesvirus |
| KT | Kidney Transplantation |
| KUB | kidneys, ureters, and bladder (x-ray) |
| KVO | keep vein open (with slow infusion) |