The<unk>  (Platelet Function Assay or Platelet Function Analyser) is a platelet function analyser that aspirates blood in vitro from a blood specimen into disposable test cartridges through a microscopic aperture cut into a biologically active membrane at the end of a capillary. The membrane of the cartridges are coated with collagen and adenosine diphosphate (ADP) or collagen and epinephrine inducing a platelet plug to form which closes the aperture. The<unk>  test result is dependent on platelet function, plasma von Willebrand Factor level, platelet number, and (to some extent) the hematocrit (that is, the percent composition of red blood cells in the sample). The<unk>  test is initially performed with the Collagen/Epinepherine membrane. A normal Col/Epi closure time (180 seconds), the Col/ADP test is automatically performed. If the Col/ADP result is normal (180 seconds, Col/ADP >120 seconds) may indicate the following; * Anemia (hematocrit <0.28) * Thrombocytopenia (platelet count <<unk>  x 10/L) * A significant platelet function defect other than aspirin Once anemia and thrombocytopenia have been excluded, further evaluation to exclude von Willebrand disease and inherited/acquired platelet dysfunction can be made.
PFA-100
TIME-ITEM
DPT-MPH
EMCrit
ACAM2000
OraQuick
LSM-775
WebPT