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Letters to the editor
Requiem for the cholecystokinin provocation test
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Editor,—I read with interest the paper from Professor Johnson’s group (Gut1998; 43:571–4) questioning the value of the cholecystokinin (CCK) provocation test as a predictor of outcome following cholecystectomy in patients suspected of having acalculous biliary pain. The results of this study are predictable as in my experience tests of gall bladder function in this situation are not much better at outcome prediction than tossing a coin unless they are combined with …