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22398 Calcium, Total

Calcium, Total
Test Code: CA
Useful For
Calcium measurements are used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease and tetany (intermittent muscular contractions or spasms).​
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Plasma​/Serum
Lithium-heparin Plasma Separator (PST)​, Serum Separator Tube (SST)
 Lithium or Sodium-heparin Green Top Tube (GTT),
Red Top Tube (RTT)

 1 mL​ 0.3 mL​ 0.3 mL whole blood​
Collection Processing Instructions
Samples collected in a RTT or GTT must be removed from the cells within one hour for storage or transport. Samples collected in gel barrier tubes must be removed from the primary tube prior to transporting to Marshfield. Do not send the primary collection tube.​
Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ ​ ​ Ambient​ 5 days​
Refrigerate​ 7 days​
Frozen​ 1 year​
Rejection Criteria
Specimens collected with EDTA, citrate, fluoride.
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Weston
 ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Calcium O-Cresolphthalein Complexone (OCPC)Bichromatic Endpoint Technique/Siemens Dimension
​Eau Claire ​Monday through Sunday​ ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU
Park Falls
 ​Monday through Sunday​ ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU
​Ladysmith Medical Center ​Monday through Sunday ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU​
Lakeview Medical Center​ ​Monday through Sunday​ ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU
Marshfield​ Monday through Sunday​ Less than 2 hours​ Arsenazo III Endpoint Assay/ Beckman AU
​Minocqua ​Monday through Sunday​ ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU
​Neillsville​Monday through Sunday​Less than 2 hours​Modified Calcium O-Cresolphthalein Complexone (OCPC)Bichromatic Endpoint Technique/Siemens Dimension
Stevens Point​ ​Monday through Friday ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU ​
​Wisconsin Rapids ​Monday through Friday ​Less than 2 hours​ ​​Modified Calcium O-Cresolphthalein Complexone (OCPC)Bichromatic Endpoint Technique/Siemens Dimension
Reference Range Information
Performing Location Reference Range
​All Sites
   0 - <1 yr:    8.5 - 10.7 mg/dL
1 - <19 yrs:    8.4 - 10.0 mg/dL
    >=19 yrs:    8.2 - 10.0 mg/dL​
​See Critical Value List for list of current critical values​ ​
Interpretation
​ranges
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82310 ​ ​ ​ ​ ​
Ordering Applications
Ordering Application Description
​Centricity ​Calcium
​Cerner ​Calcium Level Total
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Plasma​/Serum
Lithium-heparin Plasma Separator (PST)​, Serum Separator Tube (SST)
 Lithium or Sodium-heparin Green Top Tube (GTT),
Red Top Tube (RTT)

 1 mL​ 0.3 mL​ 0.3 mL whole blood​
Collection Processing
Samples collected in a RTT or GTT must be removed from the cells within one hour for storage or transport. Samples collected in gel barrier tubes must be removed from the primary tube prior to transporting to Marshfield. Do not send the primary collection tube.​
Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ ​ ​ Ambient​ 5 days​
Refrigerate​ 7 days​
Frozen​ 1 year​
Rejection Criteria
Specimens collected with EDTA, citrate, fluoride.
Useful For
Calcium measurements are used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease and tetany (intermittent muscular contractions or spasms).​
Reference Range Information
Performing Location Reference Range
​All Sites
   0 - <1 yr:    8.5 - 10.7 mg/dL
1 - <19 yrs:    8.4 - 10.0 mg/dL
    >=19 yrs:    8.2 - 10.0 mg/dL​
​See Critical Value List for list of current critical values​ ​
Interpretation
​ranges
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Weston
 ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Calcium O-Cresolphthalein Complexone (OCPC)Bichromatic Endpoint Technique/Siemens Dimension
​Eau Claire ​Monday through Sunday​ ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU
Park Falls
 ​Monday through Sunday​ ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU
​Ladysmith Medical Center ​Monday through Sunday ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU​
Lakeview Medical Center​ ​Monday through Sunday​ ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU
Marshfield​ Monday through Sunday​ Less than 2 hours​ Arsenazo III Endpoint Assay/ Beckman AU
​Minocqua ​Monday through Sunday​ ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU
​Neillsville​Monday through Sunday​Less than 2 hours​Modified Calcium O-Cresolphthalein Complexone (OCPC)Bichromatic Endpoint Technique/Siemens Dimension
Stevens Point​ ​Monday through Friday ​Less than 2 hours​ ​​Arsenazo III Endpoint Assay/ Beckman AU ​
​Wisconsin Rapids ​Monday through Friday ​Less than 2 hours​ ​​Modified Calcium O-Cresolphthalein Complexone (OCPC)Bichromatic Endpoint Technique/Siemens Dimension
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82310 ​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.