Order of Draw in Phlebotomy
About the Lecture
The lecture Order of Draw in Phlebotomy by Judith Gopo, BS, MT is from the course Phlebotomy.
Included Quiz Questions
What is the primary difference between plasma and serum in blood samples?
- Plasma is produced using additives that prevent blood clotting, while serum is produced when blood is allowed to clot naturally
- Plasma contains more electrolytes than serum, making it better for metabolic panels
- Serum is produced using additives that prevent blood clotting, while plasma requires clot activators
- Plasma is found only in arterial blood samples, while serum is found in venous samples
- Serum can only be obtained through centrifugation, while plasma can be obtained through natural separation
What is the correct order of draw for blood collection tubes?
- Blood culture, blue top (citrate), red/gold top (serum), green top (heparin), purple top (EDTA), gray top (fluoride)
- Purple top (EDTA), green top (heparin), red/gold top (serum), blue top (citrate), blood culture, gray top (fluoride)
- Red/gold top (serum), blue top (citrate), green top (heparin), purple top (EDTA), gray top (fluoride), blood culture
- Green top (heparin), purple top (EDTA), gray top (fluoride), blue top (citrate), red/gold top (serum), blood culture
- Blood culture, purple top (EDTA), blue top (citrate), red/gold top (serum), green top (heparin), gray top (fluoride)
Which laboratory abnormality would most likely result from drawing blood in a purple top tube before a green or gold top tube?
- Falsely elevated potassium levels and falsely decreased calcium levels
- Falsely elevated glucose levels and falsely decreased sodium levels
- Falsely decreased potassium levels and falsely elevated calcium levels
- Falsely elevated white blood cell count and falsely decreased hemoglobin
- Falsely elevated bilirubin levels and falsely decreased alkaline phosphatase
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Author of lecture Order of Draw in Phlebotomy
Judith Gopo, BS, MT
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