Flashcards
Sample Collection, Processing, and Analysis of Lab Service Options
Cards in this deck (10)
- 1Vacutainer tubescontain the appropriate anticoagulant and a vacuum for drawing in the appropriate volume of blood
- 2Red-Top or Serum Collection Tubecontains no anticoagulant
blood that is placed in this tube is expected to clot so you can get serum - 3Lavender-Top tubescontains the anticoagulant EDTA salt
collect blood for hematologic determinations - 4Green-Top or Heparin tubescontains lithium heparin
advantage is that time is not required for clotting to yield serum
the plasma may be separated immediately for testing - 5Total protein may be slightly higher for plasma because it includes fibrinogen Potassium averages about 0.5mmol/L higher for serum because of platelet release during clottingTrue
- 6Blue-Top or Citrate Tubecontains sodium citrate
used for coagulation biochemistry determinations - 7Sure-Sep Tubevariation of the red top tube containing no anticoagulant. stopper is red with black mottling.
contains a gel that separates packed cell fractions from serum - 8Gray-Top or Fluoride Tubecontains sodium fluoride (not an anticoagulant)
inhibits enzymes in the glycotytic pathway and prevents erythrocytes from metabolizing glucose while whole blood is being transported to the lab
not commonly used - 9Blood collected for a CBC should be analyzed within __ hour or be prepared in the proper way for analysis at a later time1 hour - if not then blood smear should be prepared and the tube refrigerated
- 10Blood collected in the red top tube is allowed to clot for _____ minutes and then centrifuged to separate the cellular components from the serum15-30 minutes, serum should be analyzed quickly otherwise refrigerate it for as long as 24-48 hours