Hair test shows very low lithium, 0.004, on a range of 0.007-0.020. Sulfer is slightly elevated. Anyone here have any recommendations for blood lithium testing and supplements? The blood tests I see seem to be related to lithium medications. This is the cheapest I have found https://www.mymedlab.com/products/search?utf8=%E2%9C%93&q=lithium As far as supplements, I see different forms of orotate and aspartate.