For many years there has been a need for a simple blood sugar test that could be quickly and economically carried out in the physician's office, at the bedside, or in the hospital emergency room. Several tests have been introduced, but they have all had disadvantages that have prevented their general use. In an effort to correct this situation Dextrotest recently has been introduced.1 Dextrotest is based upon the copperreduction principle that has been so widely used in the testing of urine by Benedict's test and Clinitest. A concentrated, deproteinized blood filtrate, which is easily prepared, is used. In Dextrotest, a blue color is obtained when the blood sugar level is below 100 mg. per 100 ml., and an orange color is obtained when the blood sugar level is above 200 mg. per 100 ml. Between these two levels gradations of green and brown are produced that enable one
Moss JM. CLINICAL STUDIES WITH DEXTROTESTSIMPLIFIED METHOD FOR THE DETERMINATION OF BLOOD SUGAR LEVEL. JAMA. 1957;164(7):762–764. doi:10.1001/jama.1957.62980070001009
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