[Value and limitations of the gastric secretion function test with 99mTc-pertechnetate]

The technique and results of the gastric secretion test using 99mTc-pertechnetate to investigate functional organic gastropathies are described. The test is fairly simple, well tolerated and an alternative to gastric probing. If performed with a computerised gamma chamber it can indicate the volume of the secretion. A rapid scintigraphy will also provide information on intestinal morphology and is useful if such information it not otherwise obtainable. However the real value of the test is in checking the results of pharmacological or surgical treatment.