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Calcium, Serum or Plasma
Test Code2068
Alias/See Also
Ca
Preferred Specimen
One 4 mL serum separator tube or plasma separator tube.Collect one 4.5 mL green top tube with gel (PST) or yellow top tube (SST), completely filled. Gently invert tube 5 times immediately after collection. Test included in BMP, CMP, RFP, and Newborn 9. For ionized calcium, use order code 2150.
Minimum Volume
1 mL serum or plasma at 2-8°C. (Min: 0.2 mL) Submit specimen in an PMC Standard Transport Tube.
Transport Temperature
1 mL serum or plasma at 2-8°C. (Min: 0.2 mL) Submit specimen in an PMC Standard Transport Tube.
Specimen Stability
After separation from cells: Ambient: 4 hours; Refrigerated: 3 weeks; Frozen: 8 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
EDTA, citrate, oxalate, and specimens from patients receiving EDTA therapy or Hypaque.
Setup Schedule
Sun-Sat
Report Available
Within 24 hours
Limitations
Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP.
Clinical Significance
"Birth to 34 days: 6.3-11.9 mg/dL
35 days to 3 years 8.9-11.3 mg/dL
3 years to adult 8.8-10.5 mg/dL"
35 days to 3 years 8.9-11.3 mg/dL
3 years to adult 8.8-10.5 mg/dL"
