Is Thymoglobulin or Rituximab the Cause of This Serum Sickness? A Case Report of Serum Sickness Dilemma and Literature Review

Table 4

Quantitative heterologous antibody profile.

Heterologous Antibodies	Normal Ranges	Patient
Rabbit IgG	Negative = <1 : 100	1 : 3200
	Low Positive = 1 : 100–1 : 400
	Mid Positive = 1 : 800–1 : 1600
	High Positive = >1 : 1600
Horse IgG	Negative = <1 : 100	1 : 100
	Low Positive = 1 : 100–1 : 400
	Mid Positive = 1 : 800–1 : 1600
	High Positive = >1 : 1600
Mouse IgG	Negative = <1 : 100	Negative
	Low Positive = 1 : 100–1 : 400
	Mid Positive = 1 : 800–1 : 1600
	High Positive = >1 : 1600