Lab Test

Electrolytes Panel (Lytes)

Serum Electrolytes, Electrolyte Panel , 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/Drawsite 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. (Min: 0.5 mL)

Preparation for Courier Transport

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

Storage

Centrifuged SST tubes and Microtainers® with separator gel may be transported and stored at room temperature (up to 25oC or 77oF) for 2-4 hours. DO NOT FREEZE TUBES CONTAINING WHOLE BLOOD. For longer storage, the specimen should be refrigerated (2o-8oC).

Red-top tubes and Microtainers® without separator gel may be stored at room temperature for up to 2 hours. DO NOT FREEZE TUBES CONTAINING WHOLE BLOOD. For longer storage, the serum should be removed from the clot and refrigerated (2o-8oC).

Serum specimens or (pour-overs) may be stored at room temperature (up to 25oC or 77oF) for 2-4 hours. For longer storage the sample should be refrigerated (2o to 8oC; 36o to 47o F) for one week.

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 Code

80051

Test Codes

Antrim #13675, EPIC: LAB5042, SOFT: LYTES

Last Updated

7/11/2019

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.