Table 1.

COVID‐19 patients with positive HIT EIA at a large academic medical center

Patient	Age	Sex	Race	Heparin exposure	Indication	Thrombosis?	Platelet nadir (109/L)	4Ts		EIA OD	SRA result	HIT diagnosis?	Outcome
								Score	Risk
1	50	M	AA	UFH SQ UFH IV	Prophylaxis ECMO	No	49	5	Intermediate	0.626	Negative	No	Death
2	79	F	W	LMWH	Prophylaxis	No	155	3	Low	1.881	Negative	No	Discharge
3	58	F	AA	LMWH	Prophylaxis	PTE	305	3	Low	0.505	Negative	No	Death
4	61	F	AA	UFH IV	CRRT	No	37	4	Intermediate	0.950	Positive	Yes	Pending
5	38	M	W	LMWH UFH IV	Prophylaxis ECMO	No	39	3	Low	0.828	Negative	No	Pending
6	71	F	AA	UFH SQ UFH IV	Prophylaxis CRRT	Stroke	70	6	High	0.465	Negative	No	Death
7	46	M	AA	LMWH	Prophylaxis	DVT	59	5	Intermediate	0.828	Negative	No	Pending

Abbreviations: AA, African American; CRRT, continuous renal replacement therapy; DVT, deep vein thrombosis; ECMO, extracorporeal membrane oxygenation; EIA, enzyme immunoassay; F, female; LMWH, low‐molecular‐weight heparin; M, male; OD, optical density; PTE, pulmonary thromboembolism; SRA, serotonin release assay; UFH, unfractionated heparin; W, White.