Fig. 1From: Rapid testing of red blood cell parameters in primary care patients using HemoScreen™ point of care instrumentBland-Altman plot for red blood cell counts (1012/L) with the mean of the two methods are plotted against the differences between the two methods. The horizontal lines show the mean difference between the two methods with 95% confidence intervals and limits of agreement with 95% confidence intervals. Mean bias between the methods was 0.04 × 1012/LBack to article page