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Test Name:
Electrolyte Panel

• SBMF No:
  23058
• Performance Lab Name:
  Automated Lab
• Test Mnemonic:
  LYTES
• ABN:
  Not required
• CPT Code:
  80051
• LOINC Code:
  2951-2; 2823-3; 2075-0; 2028-9; 1863-0
• Test Includes:
  Sodium
  Potassium
  Chloride
  Carbon Dioxide
  Anion Gap (calculated)
• Also Known As:
  Electrolytes
  Lytes
• Also See:
  29224 Carbon Dioxide, Serum
  29026 Chloride, Serum
  29127 Potassium, Serum
  29028 Sodium, Serum
• Spec Type:
  Serum
• Spec Container:
  Gold top (SST) or red top (serum) tube
• Alt Spec Type:
  Plasma
• Alt Spec Container:
  Green top (lithium heparin) tube
• Pref Vol:
  1.0 mL
• Min Vol:
  0.5 mL
• Fasting:
  No
• Spec Collect:
  Routine venipuncture
  Tube must fill to one-half, or greater, of vacuum capacity
  Immediately after collection, gently invert tube to mix
• Spec Process:
  Serum sample tubes, clot 30 minutes
  Promptly centrifuge 15 minutes
  Immediately transfer serum or plasma to separate plastic tube
  Properly centrifuged gel barrier tube sample does not require transfer of serum to separate tube
• Spec Store Transport:
  Refrigerated
• Spec Stability:
  3 days refrigerated (2-8°C)
• Spec Reject:
  Hemolyzed sample
• Methodology:
  Ion-selective Electrode (ISE)
• Use:
  Monitor electrolyte status; screen water balance; diagnose respiratory and metabolic acid-base balance; evaluate hydrational status, diarrhea, dehydration follow ketoacidosis in diabetes mellitus, and other disorders
• Clinical Significance:
  

  The role of electrolytes in the human body is manifold. There are almost no metabolic processes that are not dependent on or affected by electrolytes. Among other functions of the electrolytes are maintenance of osmotic pressure and water distribution in the various body fluid compartments, maintenance of the proper pH, regulation of the proper function of the heart and other muscles, involvement in oxidation-reduction reactions, and participation in catalysis of cofactors for enzymes.

  Also see:
  

• Reference Range:
  

  Sodium Potassium Chloride TCO2 Anion Gap

  134-145 3.6-5.2 96-108 21-29 6-22

  mEq/L mEq/L mEq/L mEq/L

• Critical Low Value:
  

  Sodium Potassium Chloride TCO2

  ≤ 124 ≤ 2.8 ≤ 74 ≤ 14

  mEq/L mEq/L mEq/L mEq/L

• Critical High Value:
  

  Sodium Potassium Chloride TCO2

  ≥ 161 ≥ 6.1 ≥ 127 ≥ 41

  mEq/L mEq/L mEq/L mEq/L

• Day Run:
  Sun-Sat (daily)
• Time Run:
  As received
• Time Reported:
  4 hours
• Test Type:
  GAS-LYTE