1. Why are tubes used for blood collection called vacuum tubes? 2. What is the significance of the different stopper colors used for the vacuum tubes? 3. Why is the order of draw so important? 4. Why...

1. Why are tubes used for blood collection called vacuum tubes?

2. What is the significance of the different stopper colors used for the vacuum tubes?

3. Why is the order of draw so important?

4. Why is it important to document that a sample was capillary rather than venous?