From a clear-minded Cleveland diagnostician, Dr. Edward Elbert Woldman, 41, last week came a simple method of detecting gastrointestinal lesions in from two to six hours. He dissolves a pinch of the common cathartic, phenolphthalein, in a third of an ounce of alcohol, dilutes it with two-thirds of an ounce of water, has the patient drink the mixture on an empty stomach. If the mucous lining of the intestinal tract is in the least eroded, the phenolphthalein quickly seeps into the blood stream.* The harmlessly adulterated blood in due course swishes through the...
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