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Test Code CA Calcium, Total, Serum

Necessary Information

Patient's age is required.

Specimen Required

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. If drawing for more than calcium, total, send first tube drawn.

2. Serum gel tubes should be centrifuged within 2 hours of collection.

3. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.

Useful For

Diagnosis and monitoring of a wide range of disorders including diseases of bone, kidney, parathyroid gland, or gastrointestinal tract

Method Name

Photometric, 5-nitro-5'-methyl-BAPTA

Reporting Name

Calcium, Total, S

Specimen Type


Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 240 days
  Refrigerated  21 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK

Reference Values

<1 year: 8.7-11.0 mg/dL

1-17 years: 9.3-10.6 mg/dL

18-59 years: 8.6-10.0 mg/dL

60-90 years: 8.8-10.2 mg/dL

>90 years: 8.2-9.6 mg/dL

Day(s) and Time(s) Performed

Monday through Sunday; Continuously

Analytic Time

Same day/1 day

Specimen Retention Time

1 week

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
CA Calcium, Total, S 17861-6


Result ID Test Result Name Result LOINC Value
CA Calcium, Total, S 17861-6