Incidentally most people have around 1% methemoglobin when you check an arterial blood gas. If she had a 3% methemoglobin level, that's not too far from normal. I've seen 8% methemoglobin in someone who was asymptomatic.
Today my wife was diagnosed with Methemoglobinemia,...
Toffle,
Is your wife diagnosed to be ill, or to have methemoglobin levels off the mean level...?