For lupus anticoagulant testing, how do you express the DRVVT screen and confirm results?

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Ratio of screen to confirm
46% (17 votes)
Ratio of screen to confirm normalized to MRI
49% (18 votes)
Difference of screen and confirm in seconds
0% (0 votes)
Difference of screen and confirm in seconds normalized to MRI
5% (2 votes)
Total votes: 37