Here is the latest paper on iron https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6971364/ . Those reference ranges are NOT normals. I've spoken with the laboratory director and the population they tested for those reference ranges was mainly senior horses. The article link describes how the founder of that laboratory determined normals.

Would it help to have a blood draw? I don't know for sure because it hasn't been studied but in other species, yes.

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Eleanor in PA

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