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PRF falls under FDA Product Code KST, labeling it as a blood draw/Hematology product classifying it as 510(k) exempt. To obtain PRF, the required quantity of blood is drawn into test tubes without an anticoagulant and centrifuged immediately. Blood can be centrifuged using a tabletop centrifuge from 3-8 minutes for 1300 revolutions per minute.
Tube must be filled to the proper line. Plain red No additive: Serum: Total complement activity, cryoglobulins: Gold (sometimes red and grey "tiger top" [3]) Clot activator and serum separating gel [4] Serum-separating tube (SST): Tube inversions promote clotting. Most chemistry, endocrine and serology tests, including hepatitis and HIV. Orange
A range of Vacutainer tubes containing blood. A vacutainer blood collection tube is a sterile glass or plastic test tube with a colored rubber stopper creating a vacuum seal inside of the tube, facilitating the drawing of a predetermined volume of liquid. Vacutainer tubes may contain additives designed to stabilize and preserve the specimen ...
The tubes have micronized silica particles which help clot the blood before centrifugation, and a gel at the bottom which separates whole blood cells from serum. [1] Silica nanoparticles induce coagulation through contact activation of coagulation factor XII (Hageman factor). [ 2 ]
The duties of a phlebotomist may include interpreting the tests requested, drawing blood into the correct tubes with the proper additives, accurately explaining the procedure to the person and preparing them accordingly, practicing the required forms of asepsis, practicing standard and universal precautions, restoring hemostasis of the puncture ...
The test tubes in which blood is collected may contain one or more of several additives. In general, tests requiring whole blood call for blood samples collected in test tubes containing some form of the anticoagulant EDTA. EDTA chelates calcium to prevent clotting. EDTA is preferred for hematology tests because it does minimum damage to cell ...