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HelpTest Code ELPSR Electrolyte Panel, Serum
Necessary Information
Patient's age and sex are required.
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.
Useful For
Identifying a suspected imbalance in electrolytes or acid/base imbalance
Method Name
KS, NAS, CL: Potentiometric, Indirect Ion-Selective Electrode
HCO3: Photometric/Enzymatic
AGAP: Calculated Result
Reporting Name
Electrolyte Panel, SSpecimen Type
SerumSpecimen Minimum Volume
0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated | 24 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
Clinical Information
The electrolyte panel is ordered to identify electrolyte, fluid, or pH imbalance. Electrolyte concentrations are evaluated to assist in investigating conditions that cause electrolyte imbalances such as dehydration, kidney disease, lung diseases, or heart conditions. Repeat testing of the electrolyte or its components may be used to monitor the patient’s response to treatment of any condition that may be causing the electrolyte, fluid or pH imbalance.
Electrolyte and acid-base imbalances can often be indicative of many acute and chronic illnesses. For this reason, the electrolyte panel is often used in the hospital and emergency settings to evaluate patients.
Reference Values
SODIUM
<1 year: not established
≥1 year: 135-145 mmol/L
POTASSIUM
<1 year: not established
≥1 year: 3.6-5.2 mmol/L
CHLORIDE
<1 year: not established
1-17 years: 102-112 mmol/L
≥18 years: 98-107 mmol/L
BICARBONATE
Males
<1 year: not established
1-2 years: 17-25 mmol/L
3 years: 18-26 mmol/L
4-5 years: 19-27 mmol/L
6-7 years: 20-28 mmol/L
8-17 years: 21-29 mmol/L
≥18 years: 22-29 mmol/L
Females
<1 year: not established
1-3 years: 18-25 mmol/L
4-5 years: 19-26 mmol/L
6-7 years: 20-27 mmol/L
8-9 years: 21-28 mmol/L
≥10 years: 22-29 mmol/L
ANION GAP
<7 years: not established
≥7 years: 7-15
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 to 2 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
80051-Electrolyte Panel (if all 4 are performed)
82435-Chloride (if all 4 are not performed)
84295- Sodium (if all 4 are not performed)
84132-Potassium (if all 4 are not performed)
82374-Bicarbonate (if all 4 are not performed)
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.