Test Details

Mnemonic

KRBC

Ordering Code

3718600

CPT-4 Code(s)

84132

Specimen Information

Collect

Green sodium heparin AND Lavender EDTA

Specimen Preparation

Send 4.0 mL whole blood collected in a green sodium heparin tube AND 4.0 mL whole
blood collected in Lavender EDTA tube. Both samples must be received for testing.

Alternate Specimen

Whole blood: Lithium heparin

Minimum Volume

1.5 mL

Transport Temperature

Refrigerated

Rejection Criteria

Hemolyzed or frozen specimens

Stability

Green sodium or lithium heparin
Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: Unacceptable

Lavender EDTA
Room temperature: 48 hours
Refrigerated: 48 hours
Frozen: Unacceptable

Methodology

Ion Selective Electrode
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Reference Range

90 - 111 mmol/L
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Performing Laboratory

Quest SJC
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