CD4 and autoimmune thrombocytopenic purpura: Of 29 patients with a CD4 count documented at the time of severe ITP diagnosis, the median CD4 was 290 (20–600)  cells/μL. Four patients had an HIV viral load documented at the time of severe ITP diagnosis, and it was >100 000 copies/mL in two patients, 92730 and 90 copies/mL in each of the other patients.