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

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Ratio of screen to confirm
42% (18 votes)
Ratio of screen to confirm normalized to MRI
51% (22 votes)
Difference of screen and confirm in seconds
0% (0 votes)
Difference of screen and confirm in seconds normalized to MRI
7% (3 votes)
Total votes: 43