TABLE 1.

Estimated numbers of whole blood and RBC units collected, transfused, and outdated in 2015 (expressed in thousands)

	Blood centers	Hospitals	Combined totals	95% CI	2013 Totals*	% Change 2015–2013
Collections
Whole blood units
Allogeneic, nondirected	10,220	529	10,748	10,176–11,321	12,109	−11.2
Autologous	18	7	25	19–31	61	−59.0
Directed	11	10	21	14–28	24	−12.3
Apheresis RBC units†	1,773	24	1,797	1,551–2,043	2,043	−12.1
Total supply	12,022	569	12,591	11,985–13,197	14,237	−11.6
Rejected on testing	46	7	53	42–63	98§
Rejected for other reasons‡	480	30	510	457–562	744§
Total available supply	11,496	532	12,028	11,454–12,603	13,395	−10.2
Transfusions
Allogeneic, nondirected		11,264		10,868–11,659	13,093	−14.0
Autologous		20		8–32	44	−54.2
Directed		66		35–96	43	52.3
Total transfusions		11,349		10,952–11,747	13,180	−13.9
Outdated whole blood or RBCs	414	186	600	542–658

^*Totals for 2013 were obtained from Chung et al.⁹

^†Apheresis RBC units include allogeneic, autologous, directed, and concurrent collections.

^‡Units rejected for other reasons do not include outdated units.

^§Rejected units for 2015 are restricted to whole blood and apheresis red blood cell collections, whereas the 2013 survey did not specify rejected units by component type or collection method.