Skip to main content
. 2016 Jan 6;11(1):e0144901. doi: 10.1371/journal.pone.0144901

Fig 4. Diagnosis of other forms of sickle cell disease.

Fig 4

(a) Representative images of blood stains produced in paper by HbSC samples and by HbAS samples, for comparison. (b) Representative images of blood stains produced in paper by HbSβ+-thalassemia samples and by HbSS samples, for comparison. (c) Classification of HbSC and HbSβ+-thalassemia samples in the S-index domain. The values of the S-index for (○) HbAA, HbAS and HbSS samples (n = 55), (■) HbSC (n = 16) and (♦) HbSβ+-thalassemia (n = 3) are shown on Y-axis. The location along the X-axis of each data point for HbAS, HbSS, HbSC and HbSβ+-thalassemia samples corresponds to their %HbS measured with Hb electrophoresis by an off-site clinical laboratory. HbAA samples (n = 18) contained no HbS; hence the random lateral spread of the data points representing these samples on the plot.