IRMA TRUpoint

Setting Normalized Calcium - iCa(N)
• iCa++ results can be altered by pH.
• Normalizing adjusts iCa++ results for changes in pH.
Most reference labs report iCa(N).
• Air bubble in sample or exposure to room air ↑ pH
and decreases iCa++.
• Delay in processing sample (> 10 min) ↓ pH and
increases iCa++.
• After setting, IRMA will report both iCa++ and iCa(N).
• When acid-base status is unknown, care should be
taken when interpreting iCa(N).