1.   Given that many people already shun sigmoidoscopy, there may not be great enthusiasm for an even more invasive test.

2.   If not, he will have more invasive tests next week.

3.   In the invasive test at issue, coronary angiography, dye is injected into coronary arteries through a flexible tube inserted into the heart.

4.   Love is promoting a less invasive test, a kind of Pap smear for the breast to indicate whether there is a likelihood of cancer.

5.   Doctors are often reluctant to recommend invasive tests for frail, elderly patients.

6.   Such screening could, in turn, lead to more invasive tests.

7.   The authors said they were not recommending that life-sustaining treatment or even all invasive tests be withheld from all end-stage dementia patients.