Harriet Lane Handbook
- Kanamycin (Kantrex)
- Karyotype
- Kate farms formulas
- Kearns-Sayre syndrome
- Keratoconjunctivitis sicca
- Keratolytics, for viral skin infections
- Kerion
- Ketamine + midazolam + atropine ("ketazolam")
- Ketoacidosis, diabetic
- KetoCal formulas
- Ketogenic diet
- Ketones, in urinalysis
- Ketotifen fumarate (Zaditor)
- Kidney function tests
- Klinefelter syndrome
- Klumpke paralysis
- Knee arthrocentesis
- Koilonychia
- Kostmann syndrome
- Krabbe disease
- Kruskal-Wallis analysis of variance by ranks