Table 2.
Different RBC indices and mathematical formulas used to differentiate between β-TT and IDA.
| Hematological index | Formula |
|---|---|
| Mentzer index (MI) (1973) | MCV/RBC |
| RDWI (1987) | MCV × RDW/RBC |
| Shine and Lal (S and L) (1977) | MCV × MCV × MCH/100 |
| Srivastava (1973) | MCH/RBC |
| Green and King (G and K) (1989) | MCV × MCV × RDW/Hb × 100 |
| Sirdah (2007) | MCV − RBC − (3 × Hb) |
| Ehsani (2005) | MCV − (10 × RBC) |
| England and Fraser (E and F) (1973) | MCV − (5 × Hb) − RBC − 3.4 |
| Ricerca (1987) | RDW/RBC |
| MDHL (1999) | (MCH/MCV) × RBC |
| MCHD (1999) | MCH/MCV |
MDHL index: mean density of Hb/liter of blood; MCHD index: mean cell Hb density.