Fig. 2From: AnemoCheck-LRS: an optimized, color-based point-of-care test to identify severe anemia in limited-resource settingsWHO Haemoglobin Colour Scale. The WHO Haemoglobin Colour Scale is a rapid, point-of-care diagnostic assay that estimates hemoglobin concentration ranging from 4 to 14 g/dL. A drop of blood is added to specialized filter paper, and the resulting color is compared to the depicted shades of red/pink in the figure. The photo for this figure was taken by the authorsBack to article page