A mobile blood collector named Chi is collecting an SST and two lavender tops (one for a glycohemoglobin and one for a CBC) on a client named Louise Jones. He fills the SST, lays it down while he...

A mobile blood collector named Chi is collecting an SST and two lavender tops (one for a glycohemoglobin and one for a CBC) on a client named Louise Jones. He fills the SST, lays it down while he places the first lavender top in the tube holder, then picks it up and mixes it as the lavender top is filling. When the lavender top is full, he lays it down while he places the second lavender top in the tube holder. The second lavender top fails to fill with blood, so he makes several needle adjustments to try to establish blood flow. Nothing works, so he decides to try a new tube. The new tube works fine. While it is filling, he picks up the first lavender top and mixes it. After completing the draw he labels his tubes, putting the hematology label on the lavender top he collected first. He finishes up with the client, delivers the specimens to the laboratory, and goes to lunch. When he returns from break his supervisor tells him to recollect the CBC on Louise Jones because the specimen had a clot in it.


a.) What most likely caused the clot in this specimen?
b.) Would the problem with the second lavender top have been an issue if Chi had handled the first lavender top properly? Explain your answer.
c.) What can Chi do to prevent this type of thing from happening in the future?