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Table 3 Results for the quality of staining of thin and thick blood film samples stained by the participants

From: External quality assessment of malaria microscopy in the Democratic Republic of the Congo

Sample Criteria Numbers (%)
Sample 5: Thin blood film supplied by EQA, stained by participant and returned to the reference laboratory (n = 163) No Giemsa stain precipitates observed 107 (65.6%)
  Red blood cells stained grey-pink 147 (90.2%)
  Chromatin of lymphocytes stained purple 60 (36.8%)
  Granules of neutrophils stained pink 100 (61.4%)
  Complies with all criteria mentioned above 16 (9.8%)
Sample 6: Routinely stained thick blood film of the participant submitted to the reference laboratory (n = 155) Correct dimensions (> 1 cm) and thickness of the film 110 (71.0%)
  Complete hemolysis of the red blood cells 118 (76.1%)
  No Giemsa stain precipitates observed 60 (38.7%)
  Good contrast between nucleus and cytoplasm 70 (45.1%)
  Complies with all criteria mentioned above 30 (19.4%)