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Test Code Billings Clinic: 4494 Calcium, Dialysis, Plasma

Important Note

Billings Clinic Dialysis Patients Only

Performing Laboratory

Billings Clinic Laboratory: Chemistry

Useful For

  • The diagnosis and monitoring of a wide range of disorders including diseases of bone, kidney, parathyroid gland, or gastrointestinal tract
  • Calcium levels may also reflect abnormal vitamin D or protein levels

Methodology

O-cresolphthalein complexone (OCPC)

Specimen Requirements

Submit only 1 of the following specimens:

Serum or plasma should be physically separated from cells as soon as possible with a maximum limit of two hours from the time of collection.

 

Plasma

  • Draw blood in a green-top (lithium heparin) tube(s).
  • Spin down and send 0.5 mL of heparinized plasma frozen.

 

Serum

  • Draw blood in a plain, red-top tube(s) or a serum gel tube(s).
  • Spin down and send 0.5 mL of serum frozen

Storage/Stability

Specimen Type Temperature Time
Serum, Plasma Refrigerated 2 days
  Frozen (preferred) 6 months
  Ambient 8 hours

Reject Due To

  • Specimens collected in citrate, oxalate or EDTA

Reference Values

8.3 - 10.6 mg/dL


Call-back values:  <6.4 mg/dL or >13.0 mg/dL

Day(s) Test Set Up

Daily

Test Classification and CPT Coding

82310 - Calcium; total

LOINC Code Information

Reporting Name LOINC Code
Calcium, Total 17861-6