Methemoglobinemia other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief:
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Overview
Other diagnostic studies
Two additional bedside methods exist for detection of methemoglobin in the blood.
The first one includes insufflating 100% oxygen in a tube that contains the patient’s blood. IF the blood remains dark, probably the cause is because eof presence of MetHb.
The second one consist of placing couple of drops of blood on white filter paper, and check for change in the colour of the blood when you expose the paper to oxygen. Simply deoxygenated hemoglobin will change its colour from dark red to bright red, whereas methemoglobin will not.