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HelpTest Code LAB53 Calcium, Total, Plasma or Serum
Reporting Title
Calcium, Total
Methodology
Roche Diagnostics, NM-BAPTA: RMH, BH, DH, DMH, GCMH, GMC, GMH, MGH, MH, OBH, PMH, WECC, HMH, SH
Useful in diagnosis and monitoring of hypocalcemia (impaired parathyroid or vitamin D function) and hypercalcemia (primary hyperparathyroidism) or bone metastasis.
VWH Lab Only:
ISE Electrolyte Buffer reagent and ISE Electrolyte Reference reagent, when used in conjunction with SYNCHRON LX® System(s), UniCel® DxC 860i System(s) and SYNCHRON® Systems AQUA CAL 1 and 2, are intended for the quantitative determination of Calcium concentration in human serum, plasma.
Performing Laboratory
OhioHealth Laboratory Services - RMH, BH, DH, DMH, GCMH, GMC, GMH, HMH, MGH, MH, OBH, PMH, SH, WECC Core Laboratories
Specimen Requirements
Submit only 1 of the following specimens:
Preferred:
Serum
Draw blood in a gold-top serum gel tube(s). Spin down and send 1 mL of serum refrigerated.
Note:
1. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.
2. Magnetic resonance imaging (MRI) contrast media containing chelating agents (gadodiamide) may interfere with testing.
3. Indicate serum on request form.
4. Label specimen appropriately (serum).
Alternate: Preferred for VWH Lab
Plasma
Draw blood in a mint green-top (heparin) gel tube(s). (Lavender-top [EDTA] tube is not acceptable.) Spin down and send 1 mL of heparinized plasma refrigerated.
Note:
1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).
VWH Lab:
3. Tubes of blood are to be kept closed at all times and in a vertical position. It is recommended that the serum or plasma be physically separated from contact with cells within two hours from the time of collection.
4. Separated serum or plasma should not remain at room temperature longer than 8 hours. If assays are not completed within 8 hours, serum or plasma should be stored at +2°C to +8°C for up to 48 hrs.
Roche Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or plasma | Refrigerated | 3 weeks |
| Ambient | 7 days | |
| Frozen | 8 months |
Specimen Transport Temperature
Refrigerate/Ambient OK/Frozen OK
Reference Values
0-11 days: 7.6-10.4 mg/dL
12 days-2 years: 9.0-11.0 mg/dL
3-12 years: 8.8-10.8 mg/dL
≥13 years: 8.4-10.2 mg/dL
Critical values <6.0 mg/dL or >13.5 mg/dL
Alerting category: Always called within 1 hour
VWH Lab Only:
8.6 – 10.0 mg/dL
Day(s) Test Set Up
Monday through Sunday; Continuously
Test Classification and CPT Coding
82310