Calcium, serum or plasma

Calcium, serum or plasma is a topic covered in the Guide to Diagnostic Tests.

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Test/Range/Collection

Calcium, serum or plasma (Ca2+)

8.5–10.5 mg/dL

[2.1–2.6 mmol/L]

Panic: <6.5 or >13.5 mg/dL

SST, PPT (light green)

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Prolonged venous stasis during collection causes false increase in serum calcium.

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