. Author manuscript; available in PMC: 2021 Mar 1.

Published in final edited form as: Transfusion. 2020 Mar;60(Suppl 2):S17–S37. doi: 10.1111/trf.15715

TABLE 21.

Age of units at transfusion, 2015 and 2017

	2017		2015

Component, age	Percent	N	Percent	N
Red blood cells
Units transfused 1–35 days	82.0 (630,433/768,450)	194	79.3 (442,397/557,980)	185
Units transfused 36–42 days	18.0 (138,017/768,450)	194	20.7 (115,583/557,980)	185
Apheresis platelets
Units transfused 1–3 days	39.6 (87,070/220,148)	394	53.0 (66,861/126,050)	312
Units transfused 4–5 days	58.4 (128,623/220,148)	394	47.0 (59,189/126,050)	312
Units transfused 6–7 days	2.0 (4,455/220,148)	394
Whole blood-derived platelets
Units transfused 1–3 days	20.0 (1,775/8,894)	1394
Units transfused 4–5 days	80.0 (7,119/8,894)	1394