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Therapeutic Ranges

Suggested Therapeutic Ranges

INR Clinical state
2.0 - 2.5 DVT prophylaxis
2.0 - 3.0 Treatment of DVT/PE
Systemic embolus
atrial fibrillation
TIAs
LV mural thrombus
Mitral valve repair
2.5 - 3.5 Tissue heart valves
Mechanical prosthetic heart valves implanted after 1990
Recurrent DVT/PE
3.0 - 3.5  DVT/PE with lupus anticoagulant
(a lower range may be sufficient)
Mechanical prosthetic heart valves implanted before 1990