Fill to label marker and mix by inversion.

Do not use 1 mL citrate tubes.

Samples must be transported to laboratory immediately. ( Within a maximun of 4 hours from collection time)

1 x 3.5 ml citrate tubes sufficient for Protein C, Protein S and Antithrombin 3.

Results not valid if patient receiving warfarin therapy or with acute thrombotic event.

Warfarin falsely lowers Protein C levels.

Fill to label marker and mix by inversion.

Do not use 1 mL citrate tubes.

1 x 3.5 ml citrate sufficient for Protein C, Protein S and Antithrombin 3.