When collecting hemostasis specimens, when do you use a discard tube?

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Just before every blue-closure tube
12% (6 votes)
Never; the discard tube is unnecessary
4% (2 votes)
Just after an additive tube to avoid carryover
15% (8 votes)
When collecting through an infusion set to avoid a short draw
27% (14 votes)
C and D above
42% (22 votes)
Total votes: 52