Hi Niner - I've realised the mistake.
I went to the lab and just ordered a bunch of blood tests myself. Now what I didn't realise was the S-Lithium test (serum lithium) gives a reference range of 0.6-1.2 mmol/l. This is a therapeutic
range. I just assumed reference range was associated with population norms. (it usually is), but for the lithium test the "normal" range is associated with a range for patience on a lithium therapy not average population.
Normal should be in the micro mol range!
0.14 micromoles = 0.00014 millimoles
In humans endogenous serum lithium levels normally range from 0.14-8.6 micromol/l, with a maximum level of 15.8 micromol/l.