For a study of gastric conditions we are able to avail ourselves of test meals, such as the Boas-Ewald, Riegel-Leube or Boas, which give a certain amount of evidence regarding both the motor and the secretary functions of the stomach. But if we are concerned with gastric motility alone, this can be examined more easily and accurately by roentgenographic methods, while in practice it has been demonstrated that the test meal method affords only partial information concerning irregularities in gastric secretion. In making use of the test meal we can only obtain a mixture of food and stomach secretions, never the pure gastric juice alone. And because of this dilution and chemical admixture with the ingested food, it is impossible to make any accurate estimate as to the precise amount of secretion given off, this difficulty being still further enhanced by the fact of its fractional withdrawal.
Normally, the outpouring
GALAMBOS A. DIRECT EXAMINATION OF THE GASTRIC JUICE: A NEW FUNCTIONAL TEST. Arch Intern Med (Chic). 1926;38(5):654–662. doi:10.1001/archinte.1926.00120290103011
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