Cryopreservation of glucose-6-phosphate dehydrogenase activity inside red blood cells: developing a specimen repository in support of development and evaluation of glucose-6-phosphate dehydrogenase deficiency tests

Table 4 G6PD status after cryopreservation as determined by two qualitative tests compared to status pre-cryopreservation

BinaxNOW G6PD deficiency test		Post-cryopreservation results
		Normal	Deficient	Total
Fresh specimen results	Normal	8	0	8
	Deficient	0	13	13
	Total	8	13	21
Fluorescent spot test		Post-cryopreservation results
		Normal	Intermediate	Deficient	Total
Fresh specimen results	Normal	7	1	0	8
	Intermediate	0	0	5*	5
	Deficient	0	0	8	8
	Total	7	1	13	21

* The five specimens initially characterized as intermediate by the fluorescent spot test were G6PD deficient by the quantitative test.

ISSN: 1475-2875