MEDCA Phlebotomy Exam Prep CHAPTER 4 || with Errorless
Answers.
Why is it important to fill tubes with anticoagulants to the correct levels? correct answers to
provide an accurate blood- additive ratio
What is the preferred anticoagulant in clinical chemistry? correct answers heparin
What is the general anticoagulant used to study glucose levels? correct answers sodium fluoride
Order Of Draw correct answers Yellow
Light Blue
Gold
Red
Orange
Green
Purple
White
Grey
Yellow Top correct answers Blood Cultures (SPS) (sodium polyanethold sulfonate)
mix by inverting 8-10 times
Additive- ACD (acid-citrate- dextrose)
Mode of Action- complement inactivation
, Uses- paternity testing, DNA studies, HLA tissue testing
Light Blue Top correct answers Citrate
Mix by inverting 3-4 times
Additive- Sodium Citrate
Mode of Action- forms calcium salts to remove calcium
Uses- coagulation tests, full draw required
Dark Blue Top correct answers Additive- Sodium EDTA
Mode of Action- contain no contaminating metals
Uses- trace element (lead, zinc) testing and toxicology
Gold Top correct answers Gel Separator
Mix by inverting 5 times
Additive- none (will clot)
Mode of Action- serum separator
- contains gel at the bottom to separate blood from serum via centrifugation
Answers.
Why is it important to fill tubes with anticoagulants to the correct levels? correct answers to
provide an accurate blood- additive ratio
What is the preferred anticoagulant in clinical chemistry? correct answers heparin
What is the general anticoagulant used to study glucose levels? correct answers sodium fluoride
Order Of Draw correct answers Yellow
Light Blue
Gold
Red
Orange
Green
Purple
White
Grey
Yellow Top correct answers Blood Cultures (SPS) (sodium polyanethold sulfonate)
mix by inverting 8-10 times
Additive- ACD (acid-citrate- dextrose)
Mode of Action- complement inactivation
, Uses- paternity testing, DNA studies, HLA tissue testing
Light Blue Top correct answers Citrate
Mix by inverting 3-4 times
Additive- Sodium Citrate
Mode of Action- forms calcium salts to remove calcium
Uses- coagulation tests, full draw required
Dark Blue Top correct answers Additive- Sodium EDTA
Mode of Action- contain no contaminating metals
Uses- trace element (lead, zinc) testing and toxicology
Gold Top correct answers Gel Separator
Mix by inverting 5 times
Additive- none (will clot)
Mode of Action- serum separator
- contains gel at the bottom to separate blood from serum via centrifugation
