Lab Test

Electrolytes Panel (Lytes)

Serum Electrolytes, Electrolyte Panel, Antrim #13675, EPIC: LAB5042, SOFT: LYTES

Test Codes

Antrim #13675, EPIC: LAB5042, SOFT: LYTES

Instructions

  • Blood should be obtained with as little venous stasis (i.e. tourniquet time) as possible. Fist clenching may result in false elevation of potassium.
  • Specimens should be kept tightly closed since CO2 will diffuse out if the tube is uncapped. This will cause an erroneously decreased value.

Specimen Collection Criteria

Collect: One Gold-top SST tube. (Minimum Whole Blood: 4.0 mL)

Contact Laboratory for acceptability of other tube types.
See Minimum Pediatric Specimen Requirements for Microtainer® collection.

Caution: Never refrigerate collection tube prior to centrifugation. This may cause a falsely elevated potassium.

Physician Office/Draw Specimen Preparation

Let SST specimens clot 30-60 minutes then immediately centrifuge to separate serum from cells. Refrigerate (2–8°C or 36–46°F) the centrifuged SST tube within two hours of collection. (Minimum: 0.5 mL)

Preparation for Courier Transport

Transport: Centrifuged SST tube, refrigerated (2–8°C or 36–46°F). (Minimum: 0.5 mL)

Rejection Criteria

  • Moderate to grossly hemolyzed specimens.
  • Inadequately centrifuged Microtainers® or Gold-top tubes.
  • Red-top tubes with serum not separated from cells within two hours of collection.

In-Lab Processing

Let SST specimens clot 30-60 minutes. Centrifuge SST tubes or Microtainers® to separate serum from cells. Deliver immediately to the appropriate testing station.


Storage

Specimen Stability for Testing:

Centrifuged SST Tubes and Microtainers® with Separator Gel
Room Temperature (20–26°C or 68–78.8°F): 2–4 hours
Refrigerated (2–8°C or 36–46°F): 7 days*
Frozen (-20°C/-4°F or below): Unacceptable

Red-top Tubes and Microtainers® without Separator Gel
Room Temperature (20–26°C or 68–78.8°F): 2–4 hours
Refrigerated (2–8°C or 36–46°F): Unacceptable
Frozen (-20°C/-4°F or below): Unacceptable

Serum Specimens (Pour-Overs)
Room Temperature (20–26°C or 68–78.8°F): 2–4 hours
Refrigerated (2–8°C or 36–46°F): 7 days*
Frozen (-20°C/-4°F or below): 7 days

*Carbon Dioxide (CO2) has a stability of 3 days refrigerated. CO2 may be falsely decreased for Electrolyte Panel add-on requests on specimens greater than 72 hours past the time of collection.

Specimen Storage in Department Prior to Disposal:

Refrigerated (2–8°C or 36–46°F): 7 days

Laboratory

Farmington Hills Chemistry Laboratory
Grosse Pointe Chemistry Laboratory
Royal Oak Automated Chemistry Laboratory
Troy Chemistry Laboratory

Performed

Sunday – Saturday, 24 hours a day.
STAT results available within 1 hour of receipt in the Laboratory.
Routine results available within 4 hours.

Reference Range

See specific analytes for reference range.
This panel includes: Carbon Dioxide (CO2), Chloride, Potassium, and Sodium.

Test Methodology

Potentiometry, Spectrophotometry.

Interpretation

See specific analytes for interpretation.
This panel includes: Carbon Dioxide (CO2)ChloridePotassium, and Sodium.

Clinical Utility

This panel is used to monitor electrolyte status. It aids in the evaluation of acid-base balance, in the evaluation of hydration status (diarrhea, dehydration) and in disorders such as ketoacidosis.

CPT Codes

80051

Contacts

Last Updated

10/30/2019

Microtainer® and Vacutainer® are registered trademarks of Becton, Dickinson and Company.
UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.

 

This directory currently reflects information only for specimens collected and/or processed at the
Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.