Diagnostic method and diagnostic means used in carrying out said method

The present invention relates to a diagnostic method used to indicate the migration of a medicament through the digestive apparatus and resorption during this migration, with the use of a negative MRI-contrast agent and a positive contract substance, introduced into gelatin capsules. The gelatin capsules are arranged as inner capsules in a common outer capsule, which is provided with barium sulphate in such an amount, relative to the specific gravity of the contents of the stomach, so that the capsule will be able to sink through the contents of the stomach and reach the small intestine without a substantial time-delay. The invention also relates to a diagnostic apparatus to carry out the diagnostic method.