Blood samples were drawn into either: 1) EDTA tubes, 2) Competitor tubes or 3) Norgen's cf-DNA/cf-RNA Preservative Tubes and stored at room temperature. Aliquots of blood were removed at the ...

If non-clotted blood is required, ∼20 μl of liquid anticoagulant should be added to the bottom of the collection tube. Liquid anticoagulant should also be drawn into the syringe or butterfly ...