>> …that tests results are measured in different units.<<
Yes, I agree, that can happen. Personally, I would never record in different units as demonstrated. That would take away the ability to see trend changes in the numbers. Fortunately, converting from one unit of measure to the other is pretty quick with the conversion calculators on the internet.
>>… the reference values, it's a little trickier …<<
Very true. I read that one cannot use the reference range quoted by one laboratory when reviewing results from another laboratory. Calibrations and sensitivity of each laboratory’s equipment determines the ranges they establish. I’ve found that reference ranges from Oncologists that draw blood and do the hematology tests in their office vary, sometimes significantly, from commercial laboratories.
robert