Yes, cftr testing has been done on colon tissue. I will see if I can find a link. If her GI surgery is being done at the same hospital that offers the NPD testing, I would see if they can try NPD again while she's already sedated.
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<br />I'm so sorry the test was so hard on your daughter! <img src="i/expressions/face-icon-small-sad.gif" border="0">
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<br />I'm so sorry the test was so hard on your daughter! <img src="i/expressions/face-icon-small-sad.gif" border="0">