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Potassium, RBC

Test Summary

Use: Potassium is nearly all maintained within cells. RBC Potassium may be useful in assessing potassium redistribution.

Aliases

  • N/A

Specimen Collection

Special Instructions

Both samples must only be collected Monday - Thursday and not before a holiday. Samples must be received together for testing.

PSC/Processing: Follow short stability protocol.

Preferred Specimen

4 mL whole blood collected in a sodium heparin or lithium heparin (green-top) tube, and 4 mL whole blood collected in an EDTA (lavender-top) tube

Minimum Volume

1.5 mL

Instructions

Both samples must only be collected Monday - Thursday and not before a holiday. Samples must be received together for testing.

PSC/Processing: Follow short stability protocol.


Patient Preparation

N/A

Storage

N/A

Transport Temperature

Room temperature

Specimen Stability

  • Room temperature: 48 hours
  • Refrigerated: 48 hours
  • Frozen: Unacceptable

Limitations

N/A

Other Acceptable Specimens

N/A

Unacceptable Specimens

Received frozen • Hemolysis

Order Code

KRBC

EPIC (Premier) Code

LAB5580

Includes

N/A

CPT Code

  • 84132 - This test is not available for New York patient testing

Billing Code

  • 670017

CPT Statement

CPT Statement

Methodology

Ion Selective Electrode (ISE)

FDA Status

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675

Department

Reference Testing

Reference Range

90-111 mmol/L

Setup Schedule / Expected Turnaround Time

Tuesday - Saturday; Report available: 3 - 5 days

Specimen Collection

Special Instructions

Both samples must only be collected Monday - Thursday and not before a holiday. Samples must be received together for testing.

PSC/Processing: Follow short stability protocol.

Preferred Specimen

4 mL whole blood collected in a sodium heparin or lithium heparin (green-top) tube, and 4 mL whole blood collected in an EDTA (lavender-top) tube

Minimum Volume

1.5 mL

Instructions

Both samples must only be collected Monday - Thursday and not before a holiday. Samples must be received together for testing.

PSC/Processing: Follow short stability protocol.


Patient Preparation

N/A

Storage

N/A

Transport Temperature

Room temperature

Specimen Stability

  • Room temperature: 48 hours
  • Refrigerated: 48 hours
  • Frozen: Unacceptable

Limitations

N/A

Other Acceptable Specimens

N/A

Unacceptable Specimens

Received frozen • Hemolysis

Billing

CPT Code

  • 84132 - This test is not available for New York patient testing

Billing Code

  • 670017

CPT Statement

CPT Statement

Result Information

Methodology

Ion Selective Electrode (ISE)

Testing Laboratory

N/A

Reference Range

90-111 mmol/L

Setup Schedule / Expected Turnaround Time

Tuesday - Saturday; Report available: 3 - 5 days