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Ranges are are absolutely necessary to generate discussion when posting lab work. Each and every lab establishes its own reference ranges based on cohort studies - and they vary. Here in Canada the upper end of the range differs from the typical American upper range on a number of tests. For example - is a TSH of 3.75 coming close to being significantly high, or modestly high? It would depend on whether one had blood drawn at LifeLabs in Toronto or LabCorp in Los Angeles; the reference range may be 5.0 or 4.0 - context is everything. I travel regularly to the States and, if blood work is done while I'm there, the first thing my Canadian doctor wants is reference ranges and she is most certainly a "knowledgeable person."

You are welcome to incorporate your lab values as part of your signature line as well as upload lab reports for reference whenever you wish.