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Calcium
MessageIt may be ordered individually or as part of a basic or comprehensive metabolic panel.
This assay is available STAT.
Performed in the Chemistry Laboratory x5820
10.2018
This assay is available STAT.
Performed in the Chemistry Laboratory x5820
10.2018
Test Code
CA
CPT Codes
82310
Preferred Specimen
Plasma from a green top (PST) tube
Minimum Volume
1 mL
Instructions
Centrifuge within 2 hours of collection.
Other specimen types and collection tube types/anticoagulants have not been verified with this assay. The instrument does not provide the capability to verify specimen type. It is the responsibility of the operator to verify that the correct specimen types are used in the assay.
Liquid anticoagulants may have a dilution effect resulting in lower concentrations for individual patient specimens.
For accurate results, serum and plasma specimens should be free of fibrin, red blood cells, and other particulate matter. Serum specimens from patients receiving anticoagulant or thrombolytic therapy may contain fibrin due to incomplete clot formation and this may cause erroneous results. For accurate results, plasma specimens should be free of platelets and other particulate matter. Ensure centrifugation is adequate to remove platelets.
Plasma: Centrifuge according to tube manufacturer’s specifications to remove platelets and ensure proper separation of plasma from blood cells.
Frozen specimens must be completely thawed before mixing. Mix thawed specimens thoroughly. Visually inspect thawed specimens. If layering or stratification is observed, mix until specimens are visibly homogeneous. If specimens are not mixed thoroughly, inconsistent results may be obtained.
NOTE: Stored specimens must be inspected for particulates. If present, mix and centrifuge the specimen to remove particulates prior to testing.
Other specimen types and collection tube types/anticoagulants have not been verified with this assay. The instrument does not provide the capability to verify specimen type. It is the responsibility of the operator to verify that the correct specimen types are used in the assay.
Liquid anticoagulants may have a dilution effect resulting in lower concentrations for individual patient specimens.
For accurate results, serum and plasma specimens should be free of fibrin, red blood cells, and other particulate matter. Serum specimens from patients receiving anticoagulant or thrombolytic therapy may contain fibrin due to incomplete clot formation and this may cause erroneous results. For accurate results, plasma specimens should be free of platelets and other particulate matter. Ensure centrifugation is adequate to remove platelets.
Plasma: Centrifuge according to tube manufacturer’s specifications to remove platelets and ensure proper separation of plasma from blood cells.
Frozen specimens must be completely thawed before mixing. Mix thawed specimens thoroughly. Visually inspect thawed specimens. If layering or stratification is observed, mix until specimens are visibly homogeneous. If specimens are not mixed thoroughly, inconsistent results may be obtained.
NOTE: Stored specimens must be inspected for particulates. If present, mix and centrifuge the specimen to remove particulates prior to testing.
Transport Container
Green Top (PST) tube
Transport Temperature
Room Temperature
Specimen Stability
2 - 8 oC: 7 days
Methodology
Arsenazo III dye method (Abbott Architect)
Setup Schedule
This assay is run 24 hours per day, 7 days per week.
Reference Range
8.7 - 9.8 mg/dL (0 - 3 years old)
8.8 - 10.1 mg/dL (3 - 11 years old)
8.8 - 10.6 mg/dL (11 - 13 years old)
9.2 - 10.7 mg/dL (13 - 15 years old)
8.9 - 10.7 mg/dL (15 - 19 years old)
8.5 - 10.5 mg/dL (> 19 years old)
Critical Alert value ≤ 6.5 or ≥ 14.0 mg/dL
8.8 - 10.1 mg/dL (3 - 11 years old)
8.8 - 10.6 mg/dL (11 - 13 years old)
9.2 - 10.7 mg/dL (13 - 15 years old)
8.9 - 10.7 mg/dL (15 - 19 years old)
8.5 - 10.5 mg/dL (> 19 years old)
Critical Alert value ≤ 6.5 or ≥ 14.0 mg/dL
Clinical Significance
This test is used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease and tetany.
