|Alternate:||CA; Total calcium|
|Available:||Daily, 24 hours|
|Turnaround:||Routine: 3 hours, STAT: 30 minutes|
|Container:||3 mL green top tube or green microtainer (sodium heparin); red top acceptable|
|Temperature:||Transport to lab within 30 minutes.|
|Normal:||0 days: 9.0-11.0 mg/dL|
1 day: 7.0-12.0 mg/dL
2 days: 9.0-11.0 mg/dL
|Uses:||Diagnosis of endocrine and metabolic disease and hyperparathyroidism, dehydration and nerve impulse transmission.|
|Limitations:||Gross hemolysis falsely elevates results.|
|Method:||Colorimetric bichromatic endpoint|
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