Clinics and Departments

Laboratory Services

Lab Dept:

Chemistry

Test Name:

CALCIUM

General Information

Lab Order Codes:

CA

Synonyms:

Ca

CPT Codes:

82310 – Calcium; total

Test Includes:

Calcium concentration reported in mg/dL.

Logistics

Test Indications:

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.

Lab Testing Sections:

Chemistry

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

1 hour

Special Instructions:

N/A

Specimen

Specimen Type:

Blood

Container:

Preferred: Green top (Li Heparin) tube
Alternate: Red top tube

Draw Volume:

0.6 mL blood

Processed Volume:

0.2 mL plasma/serum

Collection:

Routine venipuncture

Special Processing:

Lab Staff: Centrifuge specimen, remove plasma/serum aliquot into plastic sample cup. Analyze sample immediately or store at 2-8 degrees Centigrade for up to 48 hours.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimen

Interpretive

Reference Range:

Age:

Range (mg/dL):

0 - 6 days:

7.0 – 12.0 mg/dL

7 days - 12 months:

8.0 – 11.0 mg/dL

1 - 15 years:

9.0 – 10.8 mg/dL

>15 years:

8.6 – 10.6 mg/dL

Critical Values:

<6.0 or >14.0 mEq/L

Limitations:

N/A

Methodology:

O-Cresolphthalein Complexone/Colorimetric

References:

Siemens Dimension Vista CA Reagent Directions For Use, Version E (7/24/2013) Siemens Healthcare Diagnostics Inc

Jacobs & DeMott Laboratory Test Handbook (2001) Lexi-Comp, Inc, Hudson, OH, 5th Edition

Biorad Liquichek Unassayed Chemistry Control Product Insert, Bio-Rad Laboratories, Irvine, CA 92618

Biorad Liquichek Urine Chemistry Control Product Insert, Bio-Rad Laboratories, Irvine, CA 92618

Updates:

7/14/2014: Method change from Dimension to Dimension Vista.



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