case_images: PMC11368142_01
case_images: Patient had secondary polycythemia with Hb values ranging from 17.5 to 18.5 gm/dl.
case_images: JBM-15-395-g0001.jpg
case_images: PMC11368142_01_JBM-15-395-g0001.jpg
case_images: f0001
case_images: Blood investigations showed secondary polycythemia (Figure 1), Glucose-6-Phosphate Dehydrogenase (G6PD) within normal levels, and methemoglobin at around 3.9-7.1% (Figure 2).  
case_images: Patient had varying concentrations of MetHb with values from 1 to 44.5%.
case_images: JBM-15-395-g0002.jpg
case_images: PMC11368142_01_JBM-15-395-g0002.jpg
case_images: f0002
case_images: Blood investigations showed secondary polycythemia (Figure 1), Glucose-6-Phosphate Dehydrogenase (G6PD) within normal levels, and methemoglobin at around 3.9-7.1% (Figure 2).  