Table 1. Select laboratory investigations before and after relapse.

	1 month prior	Day 0 - Presentation	Day 20–Discharge date	Day 46–follow-up
Hemoglobin (g/dL)	14.2	7.2	9.9	13.5
Platelet count (E9/L)	183	58	211	227
Lactate Dehydrogenase (100–195U/L), U/L	Not available	594	168	219
ADAMTS13 activity, U/mL	Not available	<0.01	Not available	0.47