The positive predictive value for colorectal cancer of second round fecal immunochemical testing is half that of first round testing, according to a study reported in Oncology Report.
The findings, published in the March issue of Gastroenterology, revealed no significant difference in positive predictive value between average risk patients who received a guaiac fecal occult blood test in the first round and those who received a fecal immunochemical test in the first round.
Researchers said, however, that "no large difficulties are to be expected should a switch from a guaiac-based program to a FIT-based program be desired in screening programs currently using guaiac tests."
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The findings, published in the March issue of Gastroenterology, revealed no significant difference in positive predictive value between average risk patients who received a guaiac fecal occult blood test in the first round and those who received a fecal immunochemical test in the first round.
Researchers said, however, that "no large difficulties are to be expected should a switch from a guaiac-based program to a FIT-based program be desired in screening programs currently using guaiac tests."
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