| RCITR | red cell iron turnover rate |
|---|---|
| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
| TIBC | total iron-binding capacity |
| TSI | thyroid stimulating immunoglobulin; triple sugar iron [agar] |
| TSIA | total small intestine allotransplantation; triple sugar iron agar |