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Lab Dept:
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Chemistry
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Test Name:
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CALCIUM
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General Information
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Lab Order Codes:
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CA
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Synonyms:
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Ca
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CPT Codes:
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82310 – Calcium; total
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Test Includes:
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Calcium concentration reported in mEq/L.
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Logistics
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Test Indications:
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Calcium is the fifth most common element and the most prevalent cation found in the body. Calcium exists in 3 physiochemical states in plasma; free/ionized, bound, and complexed with small anions. Calcium testing is used for assessment and treatment of parathyroid disease, a variety of bone diseases and chronic renal disease.
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Lab Testing Sections:
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Chemistry
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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4 hours
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Special Instructions:
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N/A
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Specimen
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Specimen Type:
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Blood
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Container:
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Preferred: Green top (Li Heparin) tube
Alternate: Red top tube
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Draw Volume:
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0.6 mL blood
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Processed Volume:
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0.2 mL plasma/serum
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Collection:
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Routine venipuncture
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Special Processing:
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Lab Staff: Centrifuge specimen, remove plasma/serum aliquot into plastic sample cup. Analyze sample immediately or store at refrigerated temperatures.
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Patient Preparation:
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None
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Sample Rejection:
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Mislabeled or unlabeled specimen
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Interpretive
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Reference Range:
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Age:
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Range (mEq/L):
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0 - 7 days:
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3.5 - 6.0 mEq/L
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8 days - 12 months:
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4.0 - 5.5 mEq/L
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1 - 18 years:
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4.5 - 5.4 mEq/L
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>18 years:
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4.3 - 5.3 mEq/L
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Critical Values:
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<3.0 or >7.0 mEq/L
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Limitations:
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N/A
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Methodology:
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O-Cresolphthalein Complexone/Colorimetric
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References:
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CA Flex® reagent cartridge insert sheet Siemens Healthcare Diagnostics Inc (2010-10-26) PN 717123.002 – Version L.
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Jacobs & DeMott Laboratory Test Handbook (2001) Lexi-Comp, Inc, Hudson, OH, 5th Edition
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Biorad Liquichek Unassayed Chemistry Control Product Insert, Bio-Rad Laboratories, Irvine, CA 92618
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Biorad Liquichek Urine Chemistry Control Product Insert, Bio-Rad Laboratories, Irvine, CA 92618
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