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Table 1 Characteristics of the 31 specimens used to evaluate G6PD activity within cryopreserved red blood cells [[16]]

From: 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

Phenotype by activity Male Female Total Phenotype by cytochemical staining Male Female Total
Normal 6 4 10 Normal 6 3 9
Intermediate 0 3 3 Heterozygous - 4 4
Deficient 15 3 18 Deficient 15 3 18
Total 21 10 31 Total 21 10 31
  1. G6PD activity was determined by spectrophotometry with a quantitative assay. G6PD activity within red blood cells was observed by flow cytometry.