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Test Code ELPSR Electrolyte Panel, Serum

Reporting Name

Electrolyte Panel, S

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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


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.


Specimen Type

Serum

Specimen 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

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

Interpretation

With an imbalance of a single electrolyte, such as sodium or potassium, repeat testing may be ordered of that particular electrolyte, can be used to monitor the imbalance until remedied. With an acid-base imbalance, blood gases may be ordered, which will measure the oxygen, carbon dioxide, and pH levels in the arterial blood. These tests assist in evaluating the acuteness of the imbalance and monitoring the response to treatment.

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

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)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
ELPSR Electrolyte Panel, S 24326-1

 

Result ID Test Result Name Result LOINC Value
NAS Sodium, S 2951-2
KS Potassium, S 2823-3
CL Chloride, S 2075-0
HCO3 Bicarbonate, S 1963-8
AGAP Anion Gap 33037-3

Forms

If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.