Why do we measure Plasma Zinc in the blood test and not RBC?
Zinc. I have a question that I can’t find the answer to via a search of this page: Why do we measure Plasma Zinc in the blood test and not RBC? All my results are responding well to the protocol except Zinc (near the low end of the range) – Zinc’s always been stubborn for me even though I love seafood/nuts etc and consume a lot of those foods. I have Zinc Picolinate in my supplement graveyard – tempted to dip in to that a couple of times a week but nervous I could imbalance (my now quite well balanced) Cu/Cp.