| Day |
INR - Check Daily |
Dose of Warfarin |
| 1 |
<1.4 |
10mg, 5mg in the elderly with risk factors |
| 2 |
<1.8
1.8-2.0
>2.0 |
5mg
1mg
nil |
| 3 |
<2
2-2.5
2.6-2.9
3.0-3.2
3.3-3.5
>3.5 |
5mg
4mg
3mg
2mg
1mg
nil |
| 4 |
<1.4
1.4-1.5
1.6-1.7
1.8-1.9
2.0-2.3
2.4-3.0
3.1-3.2
3.3-3.5
>3.5 |
10mg
7mg
6mg
5mg
4mg
3mg
2mg
1mg
nil |
| 5+ |
If INR therapeutic use day 4 dose as maintenance dose otherwise seek specialist advice |