Why are there different lab normals for K

[Guest guest]

Some on here believe there K is ad normal at 3.8. Yet most labs use 3.5 to 5 or

5.2 as the normal range. Some labs have raised the low end to 3.7. From JC

posting the NIH is using the low end of 3.3.

Does each lab use a different way to test for K and is that why the range is not

the same?

[Guest guest]

I one accepts the concept that each person has their own normal range then this is possible.The problem is we usually do not know what you normal range is before you get sick.See the Evolution of PA article for the concept of individual normal values.CE Grim MDOn Jun 18, 2012, at 8:37 AM, Francis Bill SUSPECTED PA wrote: Some on here believe there K is ad normal at 3.8. Yet most labs use 3.5 to 5 or 5.2 as the normal range. Some labs have raised the low end to 3.7. From JC posting the NIH is using the low end of 3.3. Does each lab use a different way to test for K and is that why the range is not the same?