Iodophthalein

In approximately one-half of the cases, Priodax preceded iodophthalein and vice versa. The percentage of fair and good shadow results is almost identical with the two drugs, being 71.9 per cent for Priodax and 72.5 per cent for iodophthalein.

The preparation of the patient was exactly the same as had previously been practised with sodium iodophthalein. The usual lunch was given on the day before the examination. The evening meal was fat-free.