Table 1.

Classification of G6PD variants

Class	G6PD activity	Hemolysis	Most common variants
I	<10%	Chronic	G6PD San Diego
II	<10%	Acute	G6PD Mediterranean, G6PD Chatham
III	10–60%	Acute	G6PD‐A−, G6PD Canton
IV	60–150%	Absent	G6PD‐B, G6PD‐A+
V	Increased	G6PD Verona	G6PD Verona