Sample Handling And Collection Flashcards
What type of tube gives you whole blood?
Red top tube
What tube gives you whole blood with anticoagulant?
Purple top
What is plasma?
Fluid portion of whole blood contains all of the parts of blood
What is serum?
Plasma without fibrinogen
When are anticoagulant required?
Whole blood or plasma is needed
What does heparin interfere with?
Staining of white blood cells
What is EDTA preferred for?
Hematologic studies
What can excessive amounts of EDTA cause?
Cells to shrink and invalidate cell counts in automatic analyzer
What are example examples of oxalates?
Sodium potassium, ammonium, or lithium salts
What is the most commonly used oxalate
Potassium
What are examples of citrates?
Sodium or lithium salts
What is the most common citrate
Sodium
What is sodium fluoride used for?
Glucose preservative
What does sodium fluoride interfere with?
Enzymatic test
What is the normal PVC?
37 to 55%