I meant what I said: best estimate of ionised calcium NOT traditional "adjusted calcium". Jonathan On 18 Jun 2013, at 17:45, Mainwaring-Burton Richard (SOUTH LONDON HEALTHCARE NHS TRUST) wrote: > "Best estimate of ionised calcium" is a misnomer, since measured ionised calcium (unadulterated by yet another algorithm on the blood gas analyser) has a numeric result around half the "adjusted" calcium (Please - NEVER "corrected") which we report due to the divalent nature of the calcium ion. ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk Green Laboratories Work http://www.laboratorymedicine.nhs.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/