Answer
Yes. It is an anticoagulant that reduces the blood's ability to form or enlarge harmful clots; it does not directly dissolve an existing clot.
Sources for this answer
- tinzaparin sodium Syringe 20,000 IU/ml Solution for injection in pre-filled syringe — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.