Sodium citrate tube
Ideally specimens should be received in the laboratory on the day of venepuncture but may be stored at room temperature overnight if a delay is unavoidable.
As with all coagulation tests the tubes must not be underfilled. Haemolysis should be avoided. Mix the tube by inversion. Do not shake.
Treatment of DVT or pulmonary embolism
Recurrent DVT and PE
Mechanical prosthetic heart valves
Oral anticoagulation control
Urgent < 1 hour
Clinical advice is available from the Haematology Medical team (contact RD&E switchboard on 01392 411611)
Specimen Labelling Procedure