Autologous stem cell transplantation (ASCT) is indicated for patients with non-Hodgkin lymphoma (NHL) or Hodgkin lymphoma (HL) who have primary progressive disease or who relapse after a chemotherapy-induced complete remission. For these patients, as for other patients undergoing autologous transplantation, the number of CD34+ cells collected is a reliable predictor of neutrophil and platelet (PLT) engraftment after transplantation.