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6.5
Interpreting Assay Results
Refer to the following sections for information specific to each assay.
6.5.1
Aspirin Assay Results
The sample result (Figure 6-15) for the Aspirin assay is interpreted based on the rate
of platelet aggregation measured and is reported in Aspirin Reaction Units (ARU).
Figure 6-15 Aspirin Assay Results
Interpretation of results is based on the following assigned cutoffs: Results ≥ 550
ARU implies platelet dysfunction consistent with aspirin has not been detected.
Results < 550 ARU implies platelet dysfunction consistent with aspirin has been
detected. Results should be interpreted in conjunction with other laboratory and
clinical data available to the clinician. The result may be printed by pressing the Print
key, if your instrument has an attached printer. Press the Next
to the Main Menu. Press the Retrieve
Chapter 5, Quality Controls for more information on retrieving results.
6.5.2
P2Y12 Assay Results
The P2Y12 assay reports patient results in P2Y12 Reaction Units and Percent
Inhibition (Figure 6-16). P2Y12 Reaction Units (PRU) report the amount of P2Y12
receptor mediated aggregation specific to the platelet and are calculated as a
function of the rate and extent of platelet aggregation in the ADP channel. Press the
key to display the percent inhibition.
Figure 6-16 P2Y12 Results
VerifyNow System User Manual
key to retrieve past assay results. Refer to
Page 54
PATIENT TESTING - 6
key to return
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