What Lab Values are necessary for Warfarin administration
- PT Prothrombin time
- --Normal 11-13 secs
- --2-3.5 x baseline
- INR (International Normalized Ratio)
- --Normal 0.7 - 1.8
- --2-3.5 unites
- Antagonist ~ Vitamin K (found in dark green leafies). Give if INR/PT times are unusually high.
- Check for bruising and bleeding, esp occult blood
Always given in afternoon/evening because need a PT level before given, but need a baseline to compare. Baselines should be available my afternoon/evening.