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How Fast are the Cancer Cells Growing?

Page last modified on: March 14, 2007

There are two tests that may be used to see how fast the cancer is growing: S-phase fraction test and Ki-67 test. Both tests measure if the cells are growing at a normal rate or faster than normal.

Even in very experienced labs, these tests are hard to do reliably. That's why many doctors depend on other information to make the best treatment decisions.

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