[Myrddin]

I'm surprised that you can get an A1C as OTC. Isn't the HbA1C internal to the erythrocytes? Don't you have to spin them down, separate and induce hemolysis to release the Hb?

[steve86]

There are at least several OTC A1C products...Metrika, HomeCheck-A1c, Appraise...Some are “developed” at home, others require the sample to be sent in to the lab. At least one (Metrika) claims their process is essentially what’s used in a lab. A quick review of topical forums suggests some of these have more than the usual testing error.