Laboratory Evaluation of Coagulation

Evaluation of a bleeding patient involves the following tests

1. Protrombin time
2. Partial Thromboplastin Time
3. Thrombin Time
4. Platelet Count
5. Bleeding time
6. Assessment of coagulation factor level

 

When a factor deficiency is found it may be due to inhibitors of coagulation or a congenital deficiency. These may be differentiated by mixing studies.