The nurse is administering therapeutic heparin, an anticoagulant, for a client diagnosed with deep vein thrombosis. Which laboratory value should the nurse monitor? 1. International Normalized Ratio...

The nurse is administering therapeutic heparin, an anticoagulant, for a client diagnosed with deep vein thrombosis. Which laboratory value should the nurse monitor?

1. International Normalized Ratio (INR).

2. Prothrombin time (PT).

3. Partial thromboplastin time (PTT).

4. Platelet count.