Dear James Miller,
May I agree with my colleagues, and may I also dare to suggest you forget
any ionised Ca & Mg calculations as possibly invalid, and instead you
consider using "adjusted" aka "corrected" Ca & Mg calculations (based on
albumin only) as possibly valid?
Best wishes,
Les
> From: James J Miller <[log in to unmask]>
> Reply-To: James J Miller <[log in to unmask]>
> Date: Mon, 7 Jun 2004 18:50:00 -0400
> To: [log in to unmask]
> Subject: Calculation of ionized calcium & magnesium
>
> Does anyone know formulas (or lit source) for the calculation of ionized
> Ca and Mg from total Ca and Mg and the various readily measurable
> analytes? For iCa, I mean the formula that includes albumin, globulin
> and phosphate. I have at least one iCa formula stuck in file somewhere,
> but I can't find the file and I can't find the formula in text books or
> lit search. Thanks. -Jim
>
> James J Miller, Ph.D., DABCC, FACB
> Associate Professor
> Dept. of Pathology & Laboratory Medicine
> University of Louisville
> Louisville, KY 40292
> [log in to unmask]
>
> 502-852-1179
> Fax: 502-852-1771
>
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