Rule of Three - 1
Rules apply only if normal erythrocytes:
RBC
X
3
=
Examples of
acceptable values :
RBC
= 4.50 x 1012/L
Hb
X
3
=
Hct
+ or
- 3
Hb =
13.5 g/dL
Hct
= 40.0% or 0.40 L/L
RBC
= 4.50 x 1012/L x
3 = 13.5
Hb =
13.5 g/dL x 3 = 40.5