A value of ... was used ...
I'd like to ask about one paragraph on this page: https://www.gdx.net/core/one-page-test-descriptions/Intestinal-Permeability-Test-Description.pdf
It's the paragraph in the table below Commentary.
The patient result for the “Before-Drink” sample was below the detection limit of assay (<0.08 mmol/L). Therefore, for the purpose of calculating the percent recovery of mannitol postchallenge, a value of 0.079 was used as the “Before-Drink” value of mannitol for the calculation.
--- I understand that they couldn't detect mannitol in the sample before the patient drank the solution of mannitol (although I'm not sure I understand the term "Before-Drink sample" correctly? I take it to mean "before the patient drank the solution of mannitol".) However I'm not sure how to understand the part "a value of 0.079 was used as the “Before-Drink” value of mannitol for the calculation." It's not clear to me.
Top answer
Hi I assume that Mannitol - or something very like it - is in the body at all times. So, in a medical test, we have to judge how much of it is being added. How much was in the body before the medicine was given?
- Hi I assume that Mannitol - or something very like it - is in the body at all times.
- So, in a medical test, we have to judge how much of it is being added.
- How much was in the body before the medicine was given?
- How much was added by the medicine?
- 079 already there.
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Hi
I assume that Mannitol - or something very like it - is in the body at all times. So, in a medical test, we have to judge how much of it is being added. How much was in the body before the medicine was given? How much was added by the medicine?
As I understand it, in the test you describe, the scientists have assumed that there is 0.079 already there. That's the value that w
0
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