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The above letter was referred for comment to Dr. Seltzer, who replied as follows.—Ed.
To the Editor:—
The procedure of Drs. Baron and Oakley is an adaptation of the original Tes-Tape method, which reduces still more the materials required to run the test and thereby enhances its convenience. In general the reading ranges agree with those I found on undiluted plasma, as shown in figure 2 in my paper in The Journal, Nov. 24, 1956. That figure is reproduced here with the addition of brackets to represent Baron's reading ranges. There is one important difference between his readings and mine. He gets no color reaction at all below 60 mg. per 100 ml., whereas if we should find none at all we would rush to give glucose intravenously, since we consistently get "faint trace" or "trace" shades of green in the blood glucose range of 20 to 60 mg.
Seltzer HS. ESTIMATION OF BLOOD GLUCOSE CONCENTRATION WITH ORDINARY TES-TAPE-Reply. JAMA. 1957;164(2):204. doi:10.1001/jama.1957.02980020084023
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