Abstract
To Editor:— InThe Journal, April 16, 1960, p. 744, Drs. Doyle, Evers, and Sapit report on The New Fertility Testing Tape, stating that a paper tape impregnated with glucose oxidase and a peroxidase will turn from pink to blue in presence of glucose. In cervical mucus, glucose is alleged to be derived partly from follicular fluid, although possibility of some glucose being derived from glycolysis within fundus and cervix is postulated. They recommend use of a special vaginal applicator to hold testing paper. If, after 3 minutes in vagina, it turns blue, woman is presumed to be in the fertile phase of menstrual cycle. Based on such assumptions, Fertility Testor Company recently placed large advertisements in Los Angeles Times insinuating that this technique would serve as an accurate method for contraception as well as conception,
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