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ADAMTS13 functional inhibitor strength measured by FRETS (n = 77)
| Inhibitor titer (BU/mL) | Patients | |
|---|---|---|
| No. | % | |
| None | 13 | 17 |
| 0.5-0.9 | 14 | 18 |
| 1-2 | 20 | 26 |
| >2 | 30 | 39 |
In one of the 78 patients, inhibitor activity was measured only by IB. Among the 13 patients with no inhibitor activity measured by the FRET method, IB inhibitor activity was >2 in 1 patient, <1 to 1 in 4 patients, no inhibitor was documented in 2 patients, and an IB inhibitor measurement was not performed in 6 patients.
